So, in the interest of fun science, is it possible to brew a beer and pour it within 4 days - say brew in the morning of the first day, serve in the evening of the fourth. My general idea would be to ferment in the keg under pressure with a spunding valve, so carbonation would take no extra time. Obviously a very low gravity beer with big flavors to ‘overpower green beer syndrome’ as Drew puts it.
So, “pour in four”, or in Dutch “bier in vier” (beer in four), can it be done?
I dang near did this with a Windsor ale beer last year. Fermentation was 100% complete in 36 hours. I waited a whole 'nother week but it didn’t move another half a gravity point.
And perhaps even more interestingly…
The Cali Common that I brewed on Saturday with an overpitch of WLP810 was done fermenting in about 48 hours. I know for a fact I used about 4 times too much yeast. Nice little experiment, even if accidental. That being said… it does have a diacetyl issue currently.
I’ve had beers reaching final gravity in two days as well. I use sns. Add at high kraeusen. Would have to know what maximum volume is without getting off flavors. Can it be more than five percent?
I envision someone coming up with a bottle cap that has a seal that releases above 12 psi, but then reseals as it resets at 12 psi. A spunding valve for a bottle?
Just a hunch, but I don’t think pressurized fermentation would be the way to go. It would probably add more time to fermentation than the hour or two it takes to force-carbonate in a keg.