Cold brew coffee is known to be less acidic and it stays airtight in fridge overnight. It's not heated before consumption.
There are news on the internet about a well known coffee producer recalling its coffee cans for botulism risk. Is there any botulism risk in homemade cold brew coffee?
Also, does covering the can that contains cold brew in fridge (overnight) airtight increase botulism or any alike food poisoning risk? Should I cover it or keep it open to decrease the risks?