Well, to be honest, regular bread yeast is good for quite many styles, from kvass (which is kind of very close to this recipe) to sahti and some meads. Just got to know where you are going to get there.
alzymologist
joined 9 months ago
It does not seem to be boiled anywhere, and sugar content is relatively low, and it is highly possible that this thing is contaminated by lactics by now with all the date and sesame. Which is probably good thing, it would bring some sourness and - as others here mentioned - might prevent further fermentation at some point, although there is no sure bet, as well as with pretty much everything here. If bubbling in pure sugar mixture started after 3 weeks, that's very late start, my bets are that yeast is not alone there.
So, if it smells nice, it should be safe according to US government regulations (lol yes), can't be safer - but keep your toilet paper ready and get a plunger before you need it if you don't have one, just in case.
Even 2 years ago, yew was way way worse than actually writing js by hand.
Yes, it does! When it's crushed, it's not-so-slow release, mostly of oily matter that just stays inside if they are only cracked. And in the end, the powder could sink, or it could stay on surface, cling to tubing, clog filters, etc. And the regret of actually doing more work to grind on top of that!
There is also small increase of chances to contaminate the product, extra solid surface (negligible area in almost whole nuts versus non0negligible in powder) can harbor and somewhat protect species that are normally intolerant to alcohol.
Right, it does sound like kveik. Wouldn't guess which one or even whether it actually is kveik, I doubt that category really exists in a well defined manner lately, but is clearly useful as object property. I should probably start testing yeasts at high temperature as well as on cold, might be gems hidden there.
I can share an arcane secret here: I don't do step feeding. After a volume of complex theoretical and experimental science (and mysticism, as it often happens upon consuming statistically meaningful amounts of mead samples, blanks, etc. - fortunately, it's not distilling, thus no methanol, not even once blind!), we've came up with ultimately awesome slow release nutrient: almonds! Just 1g of slightly cracked (not crushed, or you'll regret it) nuts per liter, let them float, separate on secondary fermentation or on bottling, does not matter much. ABV 14+ easily and reliably.
Other nuts we checked (we've looked into quite a lot, hazels included) are nutritious too, but release noticeable amounts of oil. Pine nuts are of special note, they made yeast go crazy overboard, but the product was barely drinkable due to bitterness, oiliness, and general skew.
For nutrition, it seems, nitrogen and vegetable oil are equally important. According to Dr. White, addition of fatty acids to yeast as nutrient promotes cell wall growth, even to the point that it might be possible to achieve efficient exponential growth with very low oxygen content. Nitrogen available from almonds proteins is slowly released and (I suppose) makes yeast adjust cellular machinery to actually process complex materials into its own proteins. So, it's balanced diet!
And, as another, even more natural approach, - don't refine honey too much, let some pollen go through. Pollen is pretty much most appropriate protein rich nutrient in existence, and it also imparts lots of flavor, naturally.
There you go. Very simple stuff.
I'm doubtful of turbo yeast, I've seen a lot of really powerful soviet strains that go to 20%+ abv (above 30 if you are willing to mess with substrate) in matter of days. But at a dire cost of flavor, product is often only good for distilling (which, obviously, was design goal).
Of course, any lager strain can ferment below 36 and the hotter it is, faster the process, and ale strains go even above that. Result is often heavy fusel off-flavor, diacetyl, phenols. Often could be desired part of profile, but you've got to know where you plan to end up. Some lager strains advertized as "super crisp clean" explode with complexity at 27C.
And timing reported is quite typical for many liquid strains if they are prepared properly (I often bottle within a week), although it is indeed impressive for dry yeast. I wonder if they just used gentler liophilization? There are many techniques that are known, just not implemented commercially. Yet, I feel reluctant to try, conforming myself to locality feels more environmentally conscious and ethical. Although we've made the basic tools for that already...
At least fullgrain brewers should not worry about nitrogen demand ever, unless some explicit nitrogen removal was done. There is usually saturation amount of bioavailable amine groups in wort.
No idea what happens in Helsinki. In Kuopio they are in Finnish only and that's typical, but Helsinki is a unique place.
And remember to check out your local craftspeople who might have no website or any internet presence at all! At least in Finland, in bigger cities there is a yearly knife making class that usually gets filled and ends in exhibition, some alumni end up quite good. And there is usually local smith who knows what they are doing.
It dissolves in cold (tested with 14C) water, just takes a bit more time.
Even hydrometer is not safe method to tell that it's done if you have unknown biology going inside. The safest thing to do is use plastic pressure-resistant bottles that do not shatter.
And yeah, cooling will only slow secondary and make the product taste differently (maybe better, expecially since winter is over). It will not make it safer in any manner.