The English ale yeast experiment continues – Wyeast 1318

For the past few months I have been brewing pale ales with a range of different yeasts and as a follower of The Mad Fermentationist blog I thought it was about time I tried Wyeast 1318. The author of the blog Michael Tonsmeire has been brewing several beers with Wyeast 1318 one of which is called Hop Juice – Northeast IPA which from his description sounded like the perfect IPA.

Not wanting to simply copy the recipe on the blog I took an old pale ale recipe I have brewed many times and swapped the yeast to 1318 and changed the dryhopping schedule so that I dryhopped it while the fermentation was still very active.

The Pale ale had an OG of 1.046 and was dry hopped with a generous amount of Citra and Amarillo. This was a 50L batch and used a mash efficiency of 85%. The grist and hopping schedule is below.

Grist and hop schedule

Ingredients
Amt Name Type # %/IBU
11.23 kg Pale Malt (2 Row) low colour UK (4.0 EBC) Grain 1 100.0 %
10.00 g Citra [12.00 %] – Boil 90.0 min Hop 2 7.1 IBUs
150.00 g Citra [12.00 %] – Steep/Whirlpool 30.0 min Hop 3 31.4 IBUs
50.00 g Amarillo Gold [8.50 %] – Steep/Whirlpool 30.0 min Hop 4 7.4 IBUs
1.0 pkg – 4L starter London Ale III (Wyeast Labs #1318) Yeast 5
150.00 g Citra [12.00 %] – Dry Hop 4.0 Days Hop 6 0.0 IBUs
50.00 g Amarillo Gold [8.50 %] – Dry Hop 4.0 Days Hop 7 0.0 IBUs

Gravity, Alcohol Content and Color

Bitterness: 45.9 IBUs
Est Color: 6.5 EBC
Measured Original Gravity: 1.046 SG
Measured Final Gravity: 1.011 SG
Actual Alcohol by Vol: 4.7 %

The mash was at 64degC for 60min and the boil was for 90min. The wort was then pumped to the Whirlpool for a 30min rest before being knocked out to the fermenter. The wort was oxygenated at 1L per min for 2min. Yeast was pitched at 17degC and allowed to rise to 19degC, on day 4 the dryhops were added and the temp increased to 20degC for a further 4days. At this point the fermenter was crashed to 2degC and the yeast/hops dropped out of the bottom dump valve on the conical. The final gravity being 1.011.

Following 7days at 2degC the beer was transferred to 2 x corny kegs and force carbonated. One interesting thing is that normally after 7 days at 2degC I would expect the beer to be fairly clear but not this time it still had a very distinctive haze! Comment from The Mad Fermentationists blog seem to be correct, dryhopping during the active fermentation phase with this yeast really do have a drastic effect on beer clarity. The picture below shows the hazy beer, this photo was taken about a week after the beer had been kegged and placed in the kegerator at 5degC.

IMG_1597This really is one of the most refreshing pale ales I have brewed, it comes in at about 4.7% but drinks so easily its unbelievable, it is a true session pale ale, the aroma has a big citrus hit with everything you would expect from a big whirlpool and dry hop addition of Citra, but the Amarillo just restrains it nicely, it kind of takes the sharp corners off the Citra which can sometimes be unpleasant in Citra only beers.

And the bit I was not ready for was the depth of flavour when you take a mouthful; it really is like tropical/citrus fruit juice on the tongue! The one thing I think it does need is a little more mouth feel, I think an addition of something like 5% Carapils and may be 2-3% of Caramalt would take care of this, as too would mashing a little warmer say 66degC – but I think I would sooner mash at 64degC to keep the ferment ability and just add a small percentage of speciality malts to and the malt complexity to the beer.

I’m that impressed with this beer that the yeast will soon be getting another outing, this time an all Simcoe IPA which will come in at about 6%.

US Pale Ale fermented with WLP002

This is what i have come up with for the first attempt at a hoppy beer using WLP 002, its based on the IPA that did well at last years national but just toned down to a pale ale level – well a hoppy US pale a level.

First off the starter – i will pitch 1 vial of WLP002 into a 4L starter on a stir plate and hold it at a temp of about 25-26degC, it should ferment out in under 24 hours, once the yeast has dropped the beer will be decanted off leaving the slurry and maybe 0.5L or less of not very nice tasting starter beer!

This should give about 650billion cells to be pitched in to 50L of wort or a pitching rate of 1.1million cells er ml per degree plato – ish

Here is the recipe for a 50L batch. working on 80% mash efficiency

Grain bill
9.54 kg Pale Malt (2 Row) low colour UK (4.0 EBC) Grain 90.0 %
0.53 kg Cara-Pils/Dextrine (3.9 EBC) Grain 5.0 %
0.53 kg Munich Malt (17.7 EBC) Grain 5.0 %

Boil hop additions
6.00 g Chinook [13.00 %] – Boil 90.0 min Hop 4 4.7 IBUs
26.00 g Chinook [13.00 %] – Boil 30.0 min Hop 5 10.3 IBUs
26.00 g Cascade [5.50 %] – Boil 15.0 min Hop 6 1.8 IBUs

Whirlpool hop additions
70.00 g Centennial [10.00 %] – Whirlpool min Hop 7 7.0 IBUs
70.00 g Citra [12.00 %] – Whirlpool Hop 8 8.4 IBUs

Dryhop
70.00 g Centennial [10.00 %] – Dry Hop 3.0 Days Hop 10 0.0 IBUs
70.00 g Citra [12.00 %] – Dry Hop 3.0 Days Hop 11 0.0 IBUs

Gravity, Alcohol Content and Color
Est Original Gravity: 1.046 SG
Est Final Gravity: 1.011 SG
Estimated Alcohol by Vol: 4.6 %
Bitterness: 32.1 IBUs
Est Color: 7.4 EBC

The mash will be at 63degC for 60min, then ramped up and held at 68degC for 10min before being ramped up to 74degC for mash out and sparging.

This will then be followed by a 90min boil, before being transferred to the whirlpool for the whirlpool hop addition and a 30min rest.

The wort will be cooled to 17degC on transfer to the fermenter, oxygenated in the ferment at a rate of 1L per min for 2 min, and the yeast pitched at 17degC and then fermented at 19degC for approx 4days. The temp will then be raised to 20-21degC for a diacetyl rest and dryhopping. Following approximately 4 days the yeast and dryhops will be dropped (once diacetyl rest is complete) and the beer will then be crash cooled for 7days.

Water will be 80%RO and 20 tap, with some salt additions to hit my standard pale ale IPA water profile.

In theory this should be a 14 day beer from mash tun to package, and because the yeast will drop any haze left will just be chill or hop haze and no yeast to muddy the flavor, this haze could then be dealt with using gelatin during the cold crash.

This should be getting brewed next Saturday so will report back with progress

cheers

rich

Saison Solera

Back in April 2015 I brewed 2 x 120L batches of the Retribution Saison Provision (Dupont inspired Saison) that was transferred into a one of the Pinot Noir barrels in the garage, I have been tasting it every 4 weeks or so and on the last tasting it had really mellowed out and developed a very small and pleasant vinous note and had taken on a hint of colour/darkened slightly from being aged in the barrel. All in all pretty pleased.

Barrel aged SaisonThe plan is now to draw off 80 -100L of the Saison and to replace it with the next batch. The portion drawn off will be split 3 ways – 40L will be kegged for general drinking, 40L will be aged on Apricot puree with some Brett and Lacto, and the remaining will be bottled.

The next batch of Saison will be brewed to a different grist, the plan this time is to try and leave a little more for the Brett and bacteria in the barrel to set to work on. The grist is based on a commercial beer called West Ashley – the rough grain bill was mentioned on one of the Sour Hour podcasts.

  • 75% Pilsner
  • 10% Wheat
  • 5% Acidulated
  • 7% Vienna
  • 3% Flaked oats

The acidulated malt will be adjusted so I hit the right mash pH, it will be hopped with EKG and then fermented with WLP 565, I will try a blend of 565 and 566 at some point – maybe on the next solera batch.

Following primary fermentation – pitching at 28degC and fermenting at 32-35degC, the beer will be cooled to try and drop as much of the yeast as possible then transferred to the barrel at which point I will add some additional Brett and Lacto to the barrel. I’m going to try/would like too develop a slightly tart and funky character to the Saison – maybe a more traditional farmhouse character? The IBU’s are a little high for the Lacto to do much though, so this lactic sharpness/character may have to be achieved through blending.

Cheers

Rich

A British obsession

I guess what I’m really saying is why as a craft brewing nation are new micros/craft brewers in the UK obsessed with using a very neutral US ale strain (us-05), and one that does not flocculate very well which leaves a lot of yeast in suspension at the time of consumption. I guess as they are trying to emulate some of the great US craft brewers, which if that’s true they really should buy a centrifuge and or filter set, or just fine in the tank and force carbonate before packaging so they can mimic there chosen craft brewers entire brewing process.

But then again, who would you say is making the best Pale Ales/IPA’s in the US and what yeast do you think they are using? Are they using a clean US ale strain or British strains?

It’s probably safe to say that consistently the best IPA brewed in the US over the last 8 years is Union Jack IPA it won gold in the GABF in 2008 and 2009, a silver in 2013, along with a load of other medals from around the world. And what yeast do they use WLP002, or that is what their brew master has said is the closest commercially available yeast, and WLP002 is known simply as the English Ale strain on the White Labs website, and most likely is the Fullers brewery strain.

Stone Brewing has said the closest commercially available yeast to their house yeast is WLP007, this yeast is known on the White Labs site as the Dry English ale strain.

Hill Farmstead Brewery which has just been rated by the rate beer site as the best brewery in the world is rumoured to use a British ale strain, although it’s not known for sure which one. If rumours are to be believed and you have to love a good rumour then it could well be something like Wyeasts 1318 the London Ale III strain or Wyeast 1099 the Whitbread Ale strain.

I don’t know about you but im starting to detect a pattern here and yes it’s only a small sample of breweries and its far from statistically valid but arguably some of the best breweries the US has to offer at the moment are all using English/British yeast strains!

The UK tends to follow the US in brewing trends so how long will it be before more micro/craft breweries in the UK move back to British strains in the search for more balanced beers instead of the bitter hop bombs that are the current trend.

I guess the real question is can more of the new start British micros/craft breweries manage to shake off their addiction to us-05 and other dried yeasts and mover over to wet yeast? The big problem being the major lack knowledge in this area amongst both the new start, and some not so new starts!

I have a feeling the next few years will be very profitable for anyone in the yeast consultancy business!

10th Anniversary Jaipur Brewday at Thornbridge Hall Brewery

I have long known I do my finest work after a pint or 2 and this was no exception, I saw on Twitter that Thornbridge Brewery were auctioning off a brewday in support of The Rotary Jaipur Limb fund, I placed a bid thinking I would never win but win I did – and it was worth every penny.

Every year I try to do a little good in the world and anyone who has had a look through the various pages on this blog will know I work offshore in the oil and gas industry and let’s just say my employment leaves me somewhat devoid of that warm fuzzy feeling!

So after a few emails with Alex at the brewery the brewday was set for Friday the 5th June, which was lucky as I had just got home from work on the Wednesday before. Minor inconvenience is I live in London so 4:30am on the Friday the alarm went off, in the car by 5 and after getting the toe down I was in Bakewell by 8am, I was being joined by a good friend – Steve, he was traveling from Plymouth so had an even earlier start!

We met up at the brewery at about 8.30 and after a cup of tea headed up to the Thornbridge Hall brewery to meet Pete the brewer at the Hall, at which point we started mashing in for the 10bbl brew, about 400kg of low colour Marris Otter malt, Thornbridge get most of their malt from Simpsons (looking in their grain/mill room) which is annoying as I can’t get any malt from them as they don’t supply home brewers or home brew shops (that I am aware of). And yes that is right just the one malt, it appears the greatest beers are pretty simple!

Below is a picture of the HLT, Mashtun and Copper, and possible the best warning sign I have seen in a brewery!

IMG_1346

And me helping to mash in, and no its not sweat its just a shadow!!

stiring the mash

While the mash was happening at a toasty 69degC I mainly asked lots of questions about water profiles and sulphate to calcium ratios as any home brewer would, along with fermentation profiles and yeast. On a side note it is also interesting to know that even that the Riverside brewery is capable of doing stepped mashed its rare the use it, most beers are produced using a single infusion mash!

There were no big surprises on the water front, it’s just bog standard mains water (for the Hall brewery) with some additions to get the sulphate/chloride ratio to what you would expect for an IPA, balanced with hitting the right mash pH, again no surprise. The full water profile is also given in the IPA book by Mitch Steel, along with a recipe for Jaipur which is pretty close.

Following the mash was the run off/sparge to the boiler, and here is the compulsory sparge shot!

IMG_1348

The mashtun was fairly full so the last of the runnings took a while to drain, approximately 30 min later the boil was on and the first of 2 hop additions went in. The first addition being at the start of the boil, 52 IBU’s, the hop of choice being whole flower Magnum, the key here is just a clean bittering addition.

At this point Alex was back with lunch and a few beers, as the boil was for 75 min, we had time for a look round the gardens and Thornbridge Hall, all I can say I wow the whole place is fantastic, it is the quintessential English home modernised for living today, the basement bar was fantastic as was “Jim’s bar” too on the ground floor, and here is possibly the most famous statue in the craft beer world, well in the UK anyway!

IMG_1350

Back in the brewery we add over 7kg of flame out whole flower hops into 1600L of wort, a blend of Chinook, Centennial, Ahtanum, Simcoe, and Columbus. After a 20 min stand/circulation the wort was knocked out aiming for a temp in the fermenter of 18degC ish. On the way to the fermenter after the plate chiller, oxygen was added in-line, and once the knockout was complete the yeast was pitched, the fermentation then took place with temperature control kicking to stop the temperature of the fermentation going over 22degC.

I did not see it and forgot to confirm but im guessing further salt additions are also added to the boil along with yeast nutrient and a kettle finning.

For the gravity the OG that was aimed for was 13.7 plato or 1.056, and Jaipur aims for 5.9% abv which gives a FG in the region of 1.011. The Jaipur brewed on the day hit the OG bang on and finished a tad high giving an abv of 5.8%.

Yeast is an interesting point, Thornbridge use a different strain in their cask beers compared to keg and bottle, the cask strain is along the lines of West Yorkshire ale yeast the closest available to home brewers being Wyeast 1469. In the keg and bottle beers the yeast is California ale yeast WLP001, and yes they get the WLP001 (along with other yeast) in a vial from a home brew shop. The yeast is then grown up in the lab and transferred to the yeast propagation system.

Now the tricky bit and what may cause some problems for the home brewer is to get the Yorkshire ale strain to ferment out that far with a mash temp of 69degC, a lower mash temp may have to be used to achieve the correct FG – this will take some experimentation to get right I feel!

Jaipur is then dryhopped with a relatively small addition (compared to the flame out hops) of Chinook and Centennial, while the fermentation is still pretty vigorous, the duration of the dryhops is 3 days and then the beer is crash cooled when it is about 2 points above final gravity, it is then held cold for a short period before being racked into casks. Auxillary finings is added in the fermenter/racking tank and then isinglass is added to the cask.

So what makes Jaipur so good compared to IPA’s being knocked out by other breweries? From the day I spent at the Hall brewery it was obvious that are not doing anything massively different to other breweries i have seen, they certainly don’t have any big secrets – it’s simply they have a great process with attention to detail and they use the best, freshest ingredients it’s possible to get, including the use of high quality liquid yeast, no US-05, Notty or US-04 in sight! I really believe this wet yeast helps to create a beer thats leaps and bounds ahead of the competition. Not to mention a simple but great recipe and countless levels of QC and QA, ensuring a consistently great product.

So as a home brewer the logic next step is to brew a beer along the lines of Jaipur, and surprise surprise that is exactly what i have done, with a few differences due to what i had available, and what I know works in my brewery.

Here is what i came up with for a 50L batch size, 80% mash efficiency. Mashed at 69degC for 60 min, yeast nutrient and whirlfloc add with 15min to go in the boil. the whirlpool was for 30min after which the wort was knocked out and transferred to the fermenter, Once cooled to 18degC the wort was oxygenated at a rate of 1L per min for 90 seconds and the yeast pitched.

Ingredients

Amt Name Type # %/IBU
13.06 kg Pale Malt (2 Row) low colour UK (4.0 EBC) Grain 1 100.0 %
1 1 x hopshot [14.00 %] – Boil 75.0 min Hop 2 25.1 IBUs
30.00 g Chinook [12.30 %] – Boil 75.0 min Hop 3 22.1 IBUs
70.00 g Chinook [12.30 %] – Whirlpool 30min Hop 4 8.6 IBUs
60.00 g Centennial [10.00 %] – Whirlpool 30min Hop 5 6.0 IBUs
50.00 g Ahtanum [6.00 %] – Whirlpool 30min Hop 6 3.0 IBUs
20.00 g Columbus (Tomahawk) [14.00 %] – Whirlpool 30min Hop 7 2.8 IBUs
20.00 g Simcoe [13.00 %] – Whirlpool 30min Hop 8 2.6 IBUs
1.0 pkg Dry English Ale (White Labs #WLP007) [35.49 ml] Yeast 9
50.00 g Centennial [10.00 %] – Dry Hop 3.0 Days Hop 10 0.0 IBUs
50.00 g Chinook [13.00 %] – Dry Hop 3.0 Days Hop 11 0.0 IBUs

Beer Profile

Est Original Gravity: 1.056 SG Measured Original Gravity: 1.056 SG
Est Final Gravity: 1.015 SG Measured Final Gravity: 1.011 SG
Measured Alcohol by Vol: 5.9 %
Bitterness: 70.1 IBUs
Est Color: 7.6 EBC

So the differences, which you have probably spotted, bittering hops I had no Magnum so just used a blend of Non isomerised CO2 hop extract and Chinook. Malt – I used Warminster malting Low Colour Marris Otter, its the closest grain I can get to Simpsons. Aroma hops are the same however i used pellets not whole flowers, this is again simply because its what I had. And for the biggest deviation – yeast, WLP007 has kind of turned into my go to yeast when brewing IPA’s with a bit more malt character, but still wanting it to finish dry, this and i had a vial in the fridge! The amount of dryhops has also been increased just to try and get about more out of them.

I had 1 x vial of WLP007 that was approximately 60% viability, I split this vial between 2 x 3L starters, then grew the yeast up on stirplates at a temp of 24degC, this resulted in approximately 900 billion cells being pitched giving a pitching rate of 1.3 million cells / ml / deg Plato, a bit of an over pitch I will admit put I do always tend to pitch a minimum of 1 million cells / ml / deg Plato as a general rule.

As the fermentation began to die down the dryhops were added for 3 days and then as I use conicals both the yeast and the dryhops were removed from the fermenter via the bottom port.

Then unfortunately at this point I was called back to work before i could force carb the beer and start drinking it! its now sat in the fermenter at 2degC waiting for my return, on the up side the beer will be bright when I get back home, and should not suffer from chill haze.

I will report back on the final beer in mid august.

And finally i would just like to say thanks to Jim, Alex and Pete for a fantastic day at the brewery.

Cheers

Rich

Judgement day is fast approaching

It’s probably safe to say I can brew drinkable beer, people normally say its nice, but then people always tend to say that if your stood in front of them (even had a fair bit of success in competitions), but human nature steers people away from saying something confrontational even if it is the truth.

That’s what makes this next bit interesting and for me quite exciting, I have been asked and happily volunteered to brew some beer for some friend’s wedding. The question now is not so much can I brew a decent beer but can I brew beer that will be appreciated by the masses at the wedding.

After some careful consideration it was decided to brew 2 beers with a batch length of 130L each, which after losses should mean about 120L of each beer will make it into kegs for serving at the wedding.

The first beer being brewed will be a 4% pale ale which will be hopped with Citra and Amarillo to about 30IBU’s, this is a beer I have had a fair amount of success with in the past and is meant to be an easy drinking session beer. The second beer will be a 5% red ale with a whirlpool addition of Nelson Sauvin, Amarillo, and Cascade, then dry hopped with Nelson Sauvin, Ahtanum, Simcoe and Centennial, this time the beer will be nearer the 40IBU mark. The second beer will definitely be packing a fair amount more flavour wise than the first but still not to over the top.

But as always there is time constraint due to work, the beers will be going from raw materials to being served in 16days – nothing like making it hard for yourself, but more than doable. Getting the beer bright (well bright ish – will still have a haze) will be the tricky bit, but force carb’ing the beer will save a lot of time.

So the interesting bit will be how much of the beer will be left after the wedding, if there is lots it means one of 2 things the crowed aren’t beer lovers or the beer was not very good –I will take the latter meaning, alternative, there is not enough and I can take this as a more positive reflection on the beer!

Only time will tell I guess, but quite a pivotal point if there is any future in Retribution brewing if its ever going to be a commercial entity.

cheers

rich

Have you ever tasted a great example of a homebrewed English Pale Ale?

Personally i have got to admit the answer to this one is a no, to date i have tried and failed a couple of times to brew one and the some of the ones I have tasted have just missed the mark. I don’t mean ones that are drinkable, I mean ones that are flawless, a totally clean fermentation, a good hit of fruitiness from British hops and a decent level of IBU’s all brought into balance by a nice biscuity malt flavour and just enough colour from a small amount of darker malt. And no more than 3.8% abv, so it’s a true session beer – 8 pints and you can still hold a conversation and then walk home.

My 3 favourite examples of the style being Coniston Brewery’s Bluebird, Timothy Taylors Landlord and St Austell’s Tribute, although I do get the feeling that Landlord is not a good as it used to be, Bluebird and Tribute are however outstanding .

Back in 2014 I had a conversation via twitter with the owner of Coniston Brewery and he indicated I was on the right lines with the recipe I had for Bluebird (it did not take much deducing it’s pretty much on the website). The recipe is basically Marris Otter, a dash of crystal and lots of Challenger hops. The water at the brewery is very soft and they then treat (im guessing here) according to Murphys water analysis adjustments for an English Pale ale. Which (info from the brewery) equates to 2kg of liquor treatment per 400 gallons again I would guess DWB by Murphys would be the treatment used. My plan will be to use the water profile outlined in the book Water for a English pale ale ensuring I hit the right mash pH which should get me in the right ball park.

The Coniston brewery yeast strain is available from BrewLabs (if you email and ask) so can be easily sourced but it does require it to be grown up from a slant. The yeast from what I have been told is a British strain and from drinking a fair amount of Bluebird is very neutral, and if anything it accentuates the hops and does not promote a malty flavour. There is no hint of diacetyl, and from seeing the brewery the yeast is also a top cropper.

So a neutral British yeast strain that’s clean and flocculates well – WLP007, only problem is it may attenuate a little to well, this can be resolved by mashing a little warmer. So your probably asking why not get the yeast from BrewLab’s which is a good point, but to be honest I have never had great results from the yeast I have gotten from them in the past (this is most likely due to a lack of knowledge when I first started brewing and growing up yeast), so just going to go with yeast I know well and again is about right.

Here is what I have come up with for the Bluebird clone, 50L batch 85%mash efficiency, mashing at 68degC for 60min with a 60min boil–

Ingredients

Amt Name Type # %/IBU
7.54 kg Pale Malt, Maris Otter (4.0 EBC) Grain 1 95.0 %
0.40 kg Caramel/Crystal Malt – 60L (150.0 EBC) Grain 2 5.0 %
40.00 g Challenger [9.40 %] – Boil 60.0 min Hop 3 20.4 IBUs
60.00 g Challenger [9.40 %] – Boil 10.0 min Hop 4 6.1 IBUs
100.00 g Challenger, Hop Back [7.50 %] – Boil 1.0 min Hop 5 6.8 IBUs
1.0 pkg Dry English Ale (White Labs #WLP007) [35.49 ml] Yeast 6

Beer Profile

Est Original Gravity: 1.038 SG
Est Final Gravity: 1.010 SG
Estimated Alcohol by Vol: 3.7 %
Bitterness: 33.4 IBUs
Est Color: 11.1 EBC

And chances the beer brewed this will be entered into the 2015 UKHNC so will see how well I can brew a English pale ale, and to get feedback for future improvements.

Cheers

Richard

Next Barrel Project – Dark Sour aged in a second use bourbon barrel

Curvee de Tomme is one of my favourite dark sour beer, unfortunately it’s a little difficult and a little expensive to get a hold of over here in the UK. So I am hoping to brew a dark base beer, ferment it with WLP530 in stainless, then age it in a second use bourbon barrel with Wyeast 3278 Belgian Lambic blend for between 6-12 months. Previous to this the barrel held a Belgian quad, which turned out well so fingers crossed.

The barrel will then have approx 100L drawn off from it and this beer will be aged on sour cherries in a stainless vessel (100L keg) for a further 6 months or so. The beer removed will be replaced by more off the same base beer.

The base beer will be brewed using a recipe from Wild Brews which as the author says – may or may not be inspired by Curvee de Tomme, the recipe is given below it will be brewed as 2 x 130L batches working on 70% mash efficiency and mashing at 67deg C and a 90min boil:

Ingredients

Amt Name Type # %/IBU
34.83 kg Pilsner (2 Row) Bel (3.9 EBC) Grain 1 66.0 %
3.17 kg Aromatic Malt (51.2 EBC) Grain 2 6.0 %
3.17 kg Caramunich Malt (110.3 EBC) Grain 3 6.0 %
3.17 kg Munich Malt (17.7 EBC) Grain 4 6.0 %
3.17 kg Wheat Malt, Bel (3.9 EBC) Grain 5 6.0 %
1.06 kg Chocolate Malt (689.5 EBC) Grain 6 2.0 %
1.06 kg Special B Malt (354.6 EBC) Grain 7 2.0 %
3.17 kg Cane (Beet) Sugar (0.0 EBC) Sugar 8 6.0 %
160.00 g Challenger [7.50 %] – Boil 90.0 min Hop 9 25.4 IBUs
200.00 g Styrian Goldings [5.40 %] – Boil 2.0 min Hop 10 3.8 IBUs
lots Abbey Ale (White Labs #WLP530) [35.49 ml] Yeast 11

Beer Profile

Est Original Gravity: 1.087 SG
Est Final Gravity: 1.014 SG
Estimated Alcohol by Vol: 9.8 % before souring
Bitterness: 29.2 IBUs
Est Color: 47.1 EBC

Will post a brewday blog when it happens

Cheers

Rich