Like others have suggested, do give the local foods a try.

-I'll add it's usually pretty easy to fix up a cold meal (I'm thinking breakfasts/brunches/lunches) in France. Pick up some bread, and whatever else suits you. I fixed up awesome inexpensive sandwiches with veggies, cheeses and pate'. Pate' (spreadable meat) is inexpensive, normally a delicasse in the US.

If you enjoy wine, you can't really go wrong sampling the local growers with your meal(s).