This sauce is a classic base for many Mediterranean dishes.
The rich tomato and sweet onion flavours match equally well with fish, meat or vegetables. Add herbs, chillis or capers to customise it to your tastes.
Serving suggestions: add to a seafood stew, use as the base for arroz con pollo, as a simple pasta sauce, in patatas a la importancia, homemade baked beans or empanada.
Once opened, keep refrigerated and use in 1 week