Thursday 21 September 2017

So long, and thanks for all the fish

I am happy to announce that this will be the last post, here at ...

Why happy you ask - because Sui Generis Brewing is moving to a new home,!

This will be the final post here at blogspot, and I will be shutting down commenting. But don't fear - all of the posts will be preserved here for prosperity, and also have been moved to the new site where commenting will remain active.

I hope you'll drop by and check out the new digs, and that you will continue to join my in my brewing adventures!

Bryan/Sui Generis Brewing

Friday 15 September 2017

One Half Million

Today,  (Friday September 15th, 2017), at 4 AM Eastern Time, my blog recorded my 500,000th visitor! When I started this blog I had intended it as little more than a brewing log that I couldn't use; I never expected for it to evolve to what it is now, nor did I ever expect as much interest as I have received.

Thank you to all my readers (and watchers of my youtube channel - 154,695 views and counting) for making this endeavour the success it has been, and for your on-going support (and questions/feedback).

I know things have been slow here on my blog, and on my youtube channel, but that is because I am working fervorously behind the scenes to modernise and update my blogging platform. A few quick posts are in the work, and I am hoping to have the new site ready to launch in early please stay tuned!

Tuesday 1 August 2017

Please Excuse The Mess

Please excuse the lack of posts and videos lately...The SG Brewery (and my family) have recently moved to the country, and I will return to my regular brewing/blogging/vloging activities later in the summer.

And look out for some changes too - a new website, new video features, and maybe even a little bit of social media.

Tuesday 18 July 2017

At long last, how the cheap beer kit turned out.

Back in early December 2016 I posted a rambling "brewversary" video, looking back at my 20 years as a home brewer. As part of the video I attempted to rebrew my first ever home brew - a Coopers Lager canned malt kit. The goal was simple - to see if 20 years of experience was sufficient to enable me to make the kit beer taste good, as my notes from 20 years ago (and my vague memories) indicated that my first batch of beer was horrible. I've actually had a few people ask how that beer turned out, and as it turns out, back in January I pulled a half liter that I force carbed and tasted. So its well neigh time for the big reveal... was nearly "flawless", and therefore horrible. I had managed to make an on-style and off-flavour free light American lager. The sort of beer yellow fizzy stuff you buy for a buck a can. Minimal malt flavour, minimal hop character, no yeast presence. Boring, dull, get the gist. Which left me with a problem - what the hell do I do with 23L of piss-water?

Inspiration struck me as I drank a glass of wild cider a few nights later. I had made the cider in 2015, brewed exclusively with the wild yeast present on the apples pressed for the cider. It was fantastic - good apple taste, with a mild funk in the background to provide some complexity. So I swirled up the dregs from the bottle and dumped them into the beer. I figured that, at worst, I'd get a bit of a show and end up with a best I may convert the beer into something less boring.

And a show I got - within weeks I had one of the gnarliest pellicles I've had on a beer in a while.
She's a think of beauty!

The pellicle persisted until early June. Three weeks of a stable 1.001 gravity (down from 1.011) indicated the beer was ready to package, and in early July I transferred it to a keg. Interestingly, the beer had acquired a slight pink tinge during ageing; probably from oxidation, but perhaps contributed by the bugs from the cider.

The yeast and bugs from the cider did exactly what I hoped they would - they converted this boring light lager into something more like a farmhouse ale or even a saison (despite the absence of wheat). Importantly, the milder character of the yeast/bugs didn't overwhelm the wild taste of the beer, providing just enough character to make the beer interesting, without overwhelming the character.

I now love this without further ado, the tasting notes.

Appearance: The beer is a light copper, bordering on straw in colour, and has a very faint haze. It pours with a thick white head which dissipates over a few minutes into small ropes of foam. The beer is highly carbonated (3 volumes), and as a result is lively in the glass.

Aroma: Very little of the base beers aroma is present, and indeed, the aroma itself is quite mild. Dominating the aroma is an earthiness, much like freshly turned loam. A subtle pear-like fruitiness emerges as the beer warms.

Flavour: The flavour of this beer is superb. It is very dry and thirst quenching. Up front is a modest malt character - not the bready character of pilsner malt, but rather the more grain-like character of 2-row. There is a subtle hint of hop flavour, but just barely noticeable. The real star of the show is the yeast character. The cider yeast/bugs imparted a modest earthy/woody funk; not dissimilar from the flavour of a chanterelle mushroom. The yeast also provided a subtle pear-like ester whose "sweetness" helps balance out the funk. The beer is very slightly acidic; not to the point of being tart our sour, but acidic enough to stand out from conventionally brewed beers. The aftertaste is a lingering earthyness and subtle ester character.

Mouthfeel: The beer is light and effervescent in the mouth. It is very dry and light bodied, leaving your refreshed and wanting more.

Overall: This isn't the best beer I've ever made, but it is much better than how it began, and it is a perfect summer beer. I don't think I'd rebrew the beer as-is, but I could see using the cider culture to brew other light summer ales in the future; the balance the yeast achieved is fantastic, allowing for the production of tasty, but light, farmhouse style beers.

Monday 3 July 2017

One Solera, 2 Beers

Brewing a refill for
the LHBG solera.
Over the past 5 years I've maintained a series of solera's - two at home which, sadly, after 3 years of successful operation died to a bit of neglect on my part. The third belongs to my brew club, for whom I manage the solera. Starting this winter I am planning on a series of posts and videos about solera brewing, but as a bit of a prequel, I thought I'd share a brief post on by brew clubs solera (LHGB Solera) and two beers I prepared from the first pull out of it.

Firstly, for those of you who don't know, a solera is a method of continually producing sour beer. For a sour beer solera, a fermenter (often a large barrel) is filled with beer and allowed to ferment and age. At a set interval (usually between 6 months and 1 year) a portion of the solera is removed and bottled, and the solera topped off with fresh beer. Over time the effective age of the beer in the solera will approach a average age which will then be retained for the remainder of the solera's lifespan. For example, for the LHBG Solera, we remove half the beer every nine months, leading to a beer which will eventually converge on an effective age of 1.5 years. How effective ages are calculated, managing a solera, and other topics, will be the subject of some future posts.

The LHBG solera has been designed to be a middle-of-the-road sour beer; modest funk and restrained sourness. The beer is ~5% ABV, 50:50 mix of pilsner and wheat malt, and 10IBUs. This recipe was selected for a few reasons - the beer is aging in a white wine barrel, and this lighter tasting beer should allow for that character to shine through. Secondly, it allows members of the brew club a lot of flexibility in turning their share into something unique, through adding fruit, spices, or blending with other beers.

Refiling the LHGB solera.
The first time the solera was filled we brewed the beer on the personal brewing equipment of 10 volunteers, which was then pooled into the solera. The logistics of this wasn't trivial, leading our club to decide to build a large brew-rig to fill barrels (we have two at this time). Construction took a lot longer than expected (18 months), which was a happy mistake as it gave the beer a good bit of age on it, and got us to a point where we would have a solera with a stable effective age of 1.5 years. The first beer from the solera was a little more acidic than planned, and lacked brett character, so we tweaked the refill recipe to adjust. IBU's were increased to suppress sourness, performed a ferulic acid rest and fermented with a Belgian yeast to increase brett character, and finally, we added another sour culture to the mix to try and bring out a bit more complexity in the beer. These adjustments highlight the power of a solera - you can tweak a sour beer as it ages, to get a desired and consistent product.
Pellicle on the LHBG solera, as viewed during the refill.
A little over a month ago we "withdrew" the first beer from the LHGB solera, and shared the beer among interested club members. I am moving in the very near future, and has such had to do something quick with my share, as moving some carboys of sour beer are not really an option. Half of my share I bottled straight-up. The second half I put on some hibiscus for a week, whose fruit character should complement the sour beer nicely. The beer was bottled using sugar and champagne yeast, and left to carbonate for the past 6 weeks.

Straight Sour

Appearance: The unmodified (straight) sour beer pours with a thin and short-lived head. Body is golden in colour with a slight haze and a nice effervescence.

Aroma: Aroma is lactic with a notable white-wine note. Missing from the aroma is any hint of funk - no mustiness, leather or barnyard to be found.

Flavour: Up-front is a strong lactic tartness and a modest white wine character. Behind this is a bit of a bready malt character and a touch of hop bitterness. The flavours are a little unbalanced - the acidity is too high given the lighter nature of the beer, and this acts to hide both the wine and malt character. There is no brett funk at all in the flavour. There is also a slight off-flavour on the after taste; a touch of diacetyl which leaves a bit of butteriness on the aftertaste.

Mouthfeel: Acidic, crisp and dry. Aftertaste is a lingering acidity in the back of the throat, and a bit of a buttery sweetness.

Overall: Not bad for the first pull from a solera, as there has been no chances to correct for flaws yet, but still in need of improvement. Good news is that all the flaws are correctable, and on the re-fill we modified the recipe to give more brett character (which should also clean up the diacetyl) and to suppress the lacto to make it less acidic. I'm stuck with my share as-is, but if I had the time I'd blend this beer with a saison to cut the acidity, add some funk, while still allowing the white wine character to shine though.

Hibiscus Version

The choice to add hibiscus was based on a few factors. The first was speed - hibiscus was something I could add and bottle on time for our big move. The second was balance - hibiscus adds a sensation of sweetness (although not actual sugars) which can help to counteract the acidity of the beer. Finally, its floral/fruity flavour should complement the white wine character of the beer nicely.

Appearance: Strawberry-red, with a touch of haze. Unlike the straight solera beer, this one has some additional head retention, with a modest white head that lasts for a couple of minutes.

Aroma: Remarkable similar to the unmodified version; acidic with a touch of white wine. The aroma is perhaps a touch more fruity than the unmodified version, but only slightly so.

Flavour: This is where the big difference is. While still acidic, there is enough "sweetness" from the hibiscus to counter-act it somewhat. It is still a very sour beer, but is less harsh and better balanced than the unmodified version. This helps to bring out the white wine character, with the hibiscus acting to accentuate the berry character of the wine rather than acting as its own flavour. And while I know this is purely perceptive, I cannot detect the diacetyl note that is present in the unmodified version.

Mouthfeel: Dry, crisp and acidic. Despite the less acidic taste on the tongue, the beer still gives a lingering acidic burn in the throat. Aftertaste is an acidic berry character.

Overall: The hibiscus makes this a more balanced beer than the unmodified version, but as with the unmodified form, this one too has some flaws that will be corrected by adjustments to the solera's recipe.

Monday 26 June 2017

Apparently DMS is Still a Thing

DMS-Rich Vienna. Don't let
its yummy appearance
foold you!
I've been brewing since the bad ol' days of the mid-1990s. Back then malt quality is not what it is today, so we had to use a lot of tricks to get good beer. One of these was the 90 minute boil, a necessity when using Pilsner malt (and other minimally-modified malts), to drive off DMS. DMS, for those who do not know, is a sulphur-based compound present in malts which in high enough concentrations gives your beer a cooked-corn aroma and a green-vegetable-like flavour.

Obviously, something you don't want in your beer. But, luckily for us, boiling drives it off...hence the old method of boiling lagers (and other Pilsner-malt rich beers) for 90 minutes.

The good news is that malt quality has dramatically improved over the past 20 years, and the levels of DMS precursors in malt are pretty low compared to historical norms - so low that experiments by Brulosophy found it hard to detect, even after short boils. This improvement in malt quality has led homebrewers (including myself) to do things previously unthinkable - no-boil, 100% pilsner malt sours, 60 minute boils for most lagers, etc. Some of the best lagers I've brewed, like the Vienna & Pilsner I brewed last year, used 60 minute boils with great success.

So imagine my disappointment when I brewed a Vienna this year, using all the same methods and near-identical recipe to last years brew, only to find that the resulting beer had an intense DMS aroma and flavour - probably the worst DMS off-flavour I've had in a beer since the late 1990's. The beer is not undrinkable - in fact, I served it at a recent party and received good feedback - but it is flawed and not up to my normal standards. So what went wrong?

Vienna is prepared in a similar manner to Pilsner malt, meaning it has a similar risk of DMS precursors - but should also be subject to the malting improvements over the past two decades. I've brewed beers previously made of 100% Vienna, with 60 minute boils, without issue. But there is one difference - this was my first time using Weyermann Vienna; all previous batches used Vienna malt from Breiss. Although the character of the malt from each manufacturer is very similar, slight differences in their malting process may have led to different levels of DMS precursors in one malt versus the other - this conceivably could occur even on a batch-by-batch basis within the same manufacturer. That said, a google search failed to find any suggestion that Weyermann had higher levels of DMS in their Vienna than Breiss; although I did find a few reports of DMS in Vienna-heavy beers.

A second issue may have been batch size - I did a 40L batch this year, in place of a 20L batch last year. Because I use the same pot for both sizes of brews, the recent batch had half the surface area:volume ratio, which would slow the volatilization of DMS.

A third issue may have been boil vigour; while I have an over-powered burner on my brewing rig, the larger boil volume, brewing of the beer on a cold day, plus a lot of wind on this years brew day, meant that the boil vigour and rate of boil-off were not as good on the more recent batch.

At the end of the day, I think there are a few things to be learned from this batch. The first is that I probably should return to 90 minute boils for beers brewed using malts with high potential for DMS; especially if brewing larger volumes or on a day where boil vigour may be an issue. The second issue is that I should brew mission-critical beers - e.g. those intended for parties - with a bit more lead time, to allow for additional ageing (or a brewing of an alternative beer) should issues like this arise. And lastly, this beer allowed me to relive my youth, through recreation of flavours that were common in the early years of my brewing "career".

Monday 12 June 2017

Beer on the Brain - Where the Wild Yeasts Roam

A few days ago I posted episode 3 of my "Beer on the Brain" series. This new video looks at new science which finally identifies the wild source of Saccharomyces cerevisiae - and its not fruit or tree bark, as we long thought...