Thanks for the info! Experimentation in the kitchen is fun! I haven’t attempted any fermentation yet. I usually take fresh pico de gallo that’s not so fresh and cook it down with some tomato paste, blitz it, and use it as a dip or pizza sauce. To prolong its life I freeze it in an ice cube tray which I then transfer to ziplock freezer bags.
I’m curious why you would want to ferment both pico de gallo, which is essentially a fresh salsa, and blueberries? Were you trying to preserve them or something? Some context is missing here. Maybe someone else can be of more help. You have piqued my interest though.