Condiment

A condiment is an edible substance, (such as a simple sauce) that is added to some foods to impart a particular flavor, enhance its flavor,

Examples

Chutney
Fry sauce
Horseradish
Hot sauce
Ketchup
Mayonnaise
Mustard
Olive oil
Pesto
Pickle
Relish
Vinegar
Wasabi
Jelly
Marmite