English to Spanish Social Sciences Surveying

The question seems to be easy, that's what I first thought, but do you know what's the difference bet. "cooking sauce" and "sauce for cooking" here in this survey: "cooking sauces (e.g. for pasta, for cooking etc.)"? The question is "how often do you buy the following a month?".

Salsa para cocinar para "cooking sauce" y salsa para después de la cocción "sauce for cooking"? La verdad es que es complicadillo.

Gracias.