After nearly ten years of neglect, I decided it was time to rediscover my love of brewing and get back into 'All Grain' home brewing as opposed to using malt extracts and other shortcuts. I wanted to create recipes from the ground up, my very own inventions so to speak.
With a home brewing guide from the 1980s and a vast inventory of ingredients and equipment I began my task.
With very basic knowledge of brewing apart from what I'd studied at college years ago, I used my instincts and the experience I had picked up working in the service side of the booze industry for a decade or so. I knew what I wanted my beers to taste like and being an incredibly practical person, there was only one outcome.
To save you form boredom and get to the point of this post, I'll summarise what happened next. My first Pale Ale was a disaster, I put it down to lack of preparation. My second Pale Ale, based on a classic 'West Coast APA' (American Pale Ales, Something like Sierra Nevada Pale Ale) turned out to be less hoppy, maltier and sweeter than expected and came in much higher than I wanted so I diluted it at the boil stage too much thinking I'd ruined it, then worse still I spilt all but one 330ml bottles worth on the floor. Let's just say I learned after those two mistakes and my next Pale was great, even a year on it still had something going for it. My Porter albeit a little low on the carbonation was outstanding, especially for something that was under 5%, in fact it was better than any other Porter I'd been drinking around the time so my small 5L brew lengths ran out in a matter of days. I brewed more, and again, they soon went.
One could say that I got a bit cocky but I felt like changing things up a bit. It wasn't that I was bored of classic recipes, I'd just seen a lot of really cool and different takes of classic styles from working at Real Ale, one of the original and best bottle shops in the UK.
It was upon eating a particularly famous 'Wafer Thin' after dinner mint that I had an idea. I'm sure the style exists somewhere but I've not had one yet, so I wrote a recipe for mine.
I named it 'The After Dinner Stout', a Mint and Chocolate Milk Stout, at about 6-6.5%. I wanted to use fresh mint as I don't really like the flavour you get from extracts or essence. Some roasted cacao nibs for a real chocolatey hit and some lactose to add sweetness to balance out a potentially bitter beer. It was delicious, perfect, everything I wanted in a 330ml bottle. If you don't like the style, or mint or chocolate or lactose intolerant then not for you but if you do, it was lovely. It was deep, dark, rich, roasty, chocolatey, velvety smooth with a sweet start ending in a dry and mellow bitter finish with enough mint to clean it all up. It was simply put, a cleansing desert in a glass. I took a couple of bottles in to work to give the guys a taste and they loved it. It wasn't long until we upscaled it from 5L to 450L.
About a year after that brew, I felt there was only one thing that I could do for my birthday beer... An Imperial version. The Imperial After Dinner Stout. Having never brewed an Imperial Stout before I was a little worried, how would I achieve my desired ABV, body, sweetness, chocolateyness and last of all, mint. The homebrew version was minty fresh, the full batch was not quite as minty but still fairly pronounced. I was still set on using only fresh mint as I feel extracts tend to taste more mouthwash like and have an almost false flavour of mint.
Firstly it was about the mash and grain. I'd done a lot of reading into recipes, mashing techniques and the like, most of which didn't really translate over to our kit and the idea of doing a 'single infusion' mash without any steps. With severe limitations on the amount of grain we can fit into the mash tun and also the unknown of potential extract, it was a bit of a gamble to say the least. Having recently done a couple of big beers, around the 8% mark, using around 380kg of grain, we knew we could fit a bit more in, just. The recipe I'd created had 400kg, 15kg larger than our previous biggest mash.
The grist was set, there was to be no lactose. The smoothness of the mouthfeel and body was going to come from a mix of grains and naturally from the perceived sweetness of alcohol.
Mashing in dry, physically stirring in 400kg of grist into a mash tun that you can barely reach over with steam and splashing and many other hazards made the process much harder than usual. A little over half an hour later and with my arms feeling as if they were not there, or real, as if somewhere between hauling the 25kg sacks up a couple of steps or stirring it with a paddle as it plopped onto the surface, they had falling off without me knowing. After setting a timer, we all perched on the platform and gazed into the mash tun. I made a mental note that there was enough space for at least another whole grain sack in there, I think the others did too.
A long mash time and long wort recirculation ensured the highest possible extract and conversion of starches and colour. The first runnings came in at about 1.119 and were as viscous as crude oil and shockingly sweet. Perfect I thought, I would have loved to have used only that but then we would have been left with around 500L of fermentable wort which after yeast, dumping and packaging, would have given us next to no beer at all.
The transfer was smooth, the kettle was filled just above the 1000L mark, a little extra for any boil off. The hops were fairly simple and nothing overpowering or flavoursome. The beer was about the malt, the chocolate and the mint, hops were only present for their bittering and I suppose preserving qualities, not that the 10+% wouldn't do that anyway.
The most complicated aspect of the entire brew was the yeast. We were experimenting with the White LABS Super High Gravity yeast strain (apparently from Thomas Hardy's Ale) as a secondary yeast addition. The aim was to ferment with a neutral and clean yeast, we used Safale US-05 (California Ale) yeast as the primary. Lots of oxygen is pumped through the wort as it journeys from the kettle to the fermentation vessel via the heat exchange and over an aeration stone. The flow rate was higher than usual and we used a little more yeast nutrients than we would have done for a lower ABV beer. This primary fermentation would see the beer go from its original gravity of 1.089 to about 1.045 were we would then pitch the super high gravity starter to do the rest of the work. It has a much higher tolerance to alcohol and pH so was perfectly suited to this application. The starter was made with fresh wort from another brew at about 1.052 so the yeast would in no way be shocked by a massive increase in sugars or alcohol. the partially fermented wort, which could at this stage have been called beer, albeit it a very sweet and yeasty one, was pumped full of oxygen as we added the starter. There was no immediate difference but a more steady decline in sugars ending low and finishing the beer with a neutral yeast character and leaving it sitting at 10.4%.
After collecting the yeast we added 3kg of medium roast cacao nibs and about 100g of bruised fresh mint. That was about three days before packaging.
The beer bottled very well, a good level of carbonation, perhaps some may view it as being slightly higher than normal for an Imperial Stout but I'm happy with the mouthfeel. The kegs are divine, unfortunately we only managed to get about nine after bottling several hundred 750ml bottles.
I am really happy with the end result. The aroma is rich, roasted coffee and dark chocolate, the mouthfeel is not so viscous like some big Stouts and is silky smooth, almost creamy with a clean and dry finish. The palate screams chocolate, chocolate, chocolate, maybe even a bit more chocolate. It is sweet but not too sweet, it's not astringent or overly bitter and I think the mint really lightens it on the finish. Overall I think it is fantastic, but then again it is one of my brews and therefor I should. My only criticism of it is that the mint is lacking. There isn't quite enough on the nose or palate and I would have loved it if the finish had an almost lingering mint feel on the tongue.