The absence of these gases and the addition of live yeast allows the Cask Ale to undergo a brief fermentation process within the cask, ultimately making the draught richer in flavor. I've tried from fermentasaurus into 5 litre metal keg but it's not quite the right effect. Cask Ale is a form a beer that is served directly from a cask without the addition of Nitrogen or CO2, the gases used in any standard draft beer system. I'm hoping with a couple of these containers I could transfer into the " secondary " prime and fine so that a 25 litre batch could be prepared in 5 litre amounts for each weekend. They should be able to withstand low vols of pressure as the same basically as the petrol ones and I've seen those swell a lot with fuel in them if they get warm. Propped correctly the sediment would be below the out/ tap port. Could secondary ferment in these and then use the bottom exit to the beer engine. Something like these SCA Water Carry Can 10 Litre BlueĪnd they are available in 5 litre sizes as well. I'm considering water containers for small casks and just bleeding in a bit of CO2 to maintain the pressure or just opening it to the air and drinking it over a few days. Won't be true cask condition unless secondary occurs in the second vessel, but Dave Line used to do that in his book ( from many years ago). I have been thinking / working on the pressure ferment and beer engine issue for a little while. Polypins not that good at keeping oxygen out in the long term.