Opson
Opson (Greek: ὄψον) is an important category in Ancient Greek foodways.
First and foremost opson refers to a major division of ancient Greek food: the 'relish' that complements the sitos (σίτος) the staple part of the meal, i.e. wheat or barley.
Opson is therefore equivalent to Banchan in Korean cuisine and Okazu in Japanese cuisine.