I’ve been all grain brewing for a few years (40+ batches) and decided to try a cider for the family for the holidays. Followed recommendations in BYO mag using pasteurized pear juice and added SafeAle 04. Fermentation was great, clean (.056- .012) HOWEVER, I definitely have a noticeable cat pee aroma and flavor currently. The recipe calls for cranberry, cinnamon sticks and orange zest additions after primary, which I haven’t added yet. Wondering if there’s an additive that will eliminate this unwanted smell/flavor first?
Ammonia is generally the smell accociated with cat pee, and can be produced by some fermentations of fruits.
It is volatile so may be able to be gassed off by force CO2 and degassing. Repeat until it's gone.
I do not believer there is any instant additive that will relieve the odour without creating other problems. One might be able to use activated carbon(charcoal) to remove some flavour/odour compounds. It is a viable technique but not always 100% successful. Maybe the use of cinnamon, orange and cranberries is exactly what is required to mask the offending aroma?
Brews using apples and pears (and other fruit) can smell quite rank when first fermented. I would recommend bottle conditioning for a long time. IMHO one year is not too short for cider or perry to age correctly. During that time the taste and aroma usually change considerably for the better.