What did ancient Greeks eat for lunch?

Their main food was pottage. Pottage is a kind of thick stew made from wheat, millet or corn. Sometimes they would add cooked meat, offal or a sauce made out of wine.

Food for the common people consisted of wheat or barley, olive oil. a little fish, wine, home grown vegetables, and if they were lucky enough to own a goat or cow or chickens, cheese and a few eggs.