This is a vast question. Definitely depends on where you are and what you want to eat.
A simple but delicious meal of beans in a tomato sauuce with rice and bread will cost you hardly anything. A fish dinner with all the trimmings might require a second mortgage!
Local food is always good. Bread is plentiful and freshly made every day.
Things that I always enjoyed eating were:
breakfast - local honey, eggs, jam, bread, olives, cheese, tea
tost - a toasted sandwich with maybe salami, cheese, tomatoes etc
freshly squeezed juice - usually orange juice
pide - a bit like a pizza and wonderful when cooked in a wood oven
kebab - either pieces of meat perhaps with aubergine or similar, or the doner style kebab. I am craving Iskender kebab right now which is slices of meat over bread with a yoghurt and tomato sauce
yoghurt - fresh yoghurt with some strained fruit
All of these are simple, easy foods and are reasonably priced. about 6 years ago