Ask Mr Wizard Alternative Lagering/Carbonation Method? Q Reading some forums and brewing websites from the Czech Republic, I understand that one can interrupt the primary fermentation when it reaches 75%, perform a cold crash, dump the yeast in the case you ferment in a unitank — or rack beer to a clean, sanitized and CO2-purged Corny keg/vessel/britetank — install a spunding valve, set this on 15 psi, maintain the temperature at ~2 °C (36 °F), and let nature do the rest for the coming eight weeks or so, resulting in a fully carbonated, clean Bohemian Pilsner ready for bottling. Are you familiar with this process? I cannot find any literature on this topic. Will it work without adding gyle/kraΓΌsening/priming sugar and yeast, or is the remaining dissolved yeast and sweetness enough to complete the fermentation and carbonation? That would be something. A Nice to see another great question coming in from brewers in Norway! The process outlined above may sound a bit extreme to the modern brewer, but the temperature and time progression described essentially follow traditional cold-lager fermentation and a subsequent cold maturation. Read More |
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