[dopylitty]

I've never understood why these things don't cause food poisoning due to bacillus cereus. There are all sorts of theories about vinegar being used in cooking or whatnot but I've never seen any rigorous study of the microbiome of an onigiri.

[Ferret7446]

By keeping them refrigerated and not stored for a long time? It's not rocket science.

I think the issue is when people (usually Westerners unaccustomed to rice) try to treat cooked rice like bread rather than like cooked pasta.