How do I pay for food with Bitcoin?

I'm curious, could you please elaborate on the process of paying for food with Bitcoin? As a cryptocurrency, it seems unconventional to use for everyday transactions like purchasing groceries or dining out. Is there a specific app or service that enables this? How does the merchant receive the payment and convert it into their local currency? Additionally, are there any fees associated with using Bitcoin for such transactions? I'd appreciate any insight you can provide on the practicalities of using Bitcoin for food purchases.