After my first taste of Berliner Kindl Weisse, I’ve been lusting after a gorgeously tart Berliner Weisse for a while now and have been promising myself a crack at brewing one.
Well I’ve just managed to get one going:
Here’s the recipe:
Trouble is, it’s a little more involved than the standard mash, boil and bung in the yeast routine – to start with I did a mini mash on the stove top (I’ve no idea what I’d do with 23 L of Berliner Weisse?) with the mash rests as follows:
When I sparged, I needed to ensure that there’d be enough wort to fill a demijohn almost completely – air is our enemy here…oh did I mention that I’d be souring this bad boy with Lactobacillus?
…and, because I’m as tight as a gnat’s chuff, I’m going to be doing the souring with Probiotic “healthy gut” Lactobacillus Plantarum tablets.
Yeah, you heard that right: Mmmm-hmm, deal with it girlfriend.
Rather than forking out six or seven quid a pop for a single-use WL/WY lactobacillus culture in a test tube, I’m just going to crack open a couple of these Swanson Pro-biotics “healthy gut” tablets into some cooled and boiled water to re-hydrate and then pitch the whole lot into the wort.
Each tablet supposedly contains 10 beellion viable cells, and I apparently need 20 beellion for a gallon of wort, so two will do nicely.
(BTW the tablets are seven quid for 30 – so I can do lots more of soured beer with the other 28 or so. OR I can make a starter and make even more!)
Brewing on the cheap AND supporting my bowels, you’ve gotta like that.
The common consensus is that you can expect about 24 – 36 hours for the souring to happen…but it’s standard practice to use a smidge (3ml or so in my case) of lactic acid in the wort after you’ve sparged to get it down to 4.5 pH – which should stop any unpleasant bacteria taking hold in the meantime…
You can use a pH meter or pH strips to check for acidity – both of these seem largely hopeless when I tested. I think, on reflection, I probably trusted the strips more…
Once it’s soured to an acceptable level (and that’ll be pleasantly acidic, rather than strip the enamel from your teeth acidity) I’ll get the lot into a pan and re-boil for half-an hour, adding the hops to 8 IBUs, etc. and then bunging in a clean ale yeast to ferment it to a finish – as I would for a normal beer.
God this brewing lark is giddily exciting sometimes…
So it’s a couple of days later, now.
The Lacto has been taking it’s time souring the wort – despite my best efforts: swirling up the all-too-flocculant sediment and keeping the whole lot over 25c if I can.
Last night, it tasted as if we were finally getting there: the wort was still sweet, but getting a pleasant, if subtle, acidity to it…
Then this morning I noticed a Krausen! I mean a high krausen with a right old load of brown yeast on the top and bubbles in the airlock and everything. That wasn’t supposed to happen…I haven’t put any hops in it yet, let alone any yeast!
I mean, I did briefly boil it for ten minutes prior to pitching the Probiotics and that was only to “sanitize” it…
After freaking out about it when I first found it this morning, I thought about boiling it all quickly and adding the hops and all that; but I’d no idea how much alcohol would boil off and what it would do the taste…so in the end I’ve decided to just leave it to do it’s thing.
It smells and tastes fine* and I suppose it’s accepted practice to brew Berliner Weisse under a no-boil procedure: because of the eventual acidity it shouldn’t need the preservative power of hops, and the style isn’t hop-forward in any sense, I might just get away with it. I guess I’ll just have to wait and see what happens.
(*I shouldn’t have tasted it at all really: tasting is a big no-no when fermenting with unknown wild cultures – at least in the first few days – heaven knows what could be growing growing in there…a fact I remembered slightly after taking the first sip…)
In any case, I’ve now moved the whole thing to a cooler area of the house to try and keep the yeast from chucking out hot fusel alcohols in the first few days. What happens next is anyone’s guess. I suppose there’s two possible outcomes to this whole business:
1) I end up with a gacky, smelly thing that I’ll have to pour down the sink and afterwards, scrub the demijohn ’til my fingers bleed
2) I get a tart and interesting Berliner Weiss, in fact a LAMBIC BERLINER WEISSE. Yeah, take that and smoke it in your Briars, Hipsters!
I may also get an interesting Lacto/Brett/Brewers house culture that I can clutter up the fridge with… Happy days.
http://www.swansonvitamins.com/swanson-probiotics-l-plantarum-inner-bowel-support-30-veg-drcaps (They’re available in the UK…)