I don't think they have to worry about lack of access to cold for the next few months. I believe you're accurate re: India and sources of biomass in that context and the possibility of some processing/conversion, but how representative is that of the resources at disposal of the typical person in Ukraine? I imagine more urban residences with electricity and not a lot of cows.

Sorry, I was trying to be sarcastic and might've failed! There is no way to do distributed fossil fuel infra. I was suggesting the OP get a few dozen cows to build one!