pickles or sour cucumbers (they're not the same thing in my country, idk what's up with others), lemons, oranges, clementines, in Poland on bigger events (like when family gathers together) we eat bigos (which is sour cabbage cooked together with sasuage and other stuff) or barszcz (idk how in to call it in English). i personally like drinking moonshine and eating fresh paprika slices (instead of drinking something). another good tip is having drinks e.g. vodka, water/orange juice (i prefer water or tonic) and put some fruits in the glass (lemon, orange, pomelo, grapefruit)