Marinated Tomatoes

4 medium tomatoes
1/2 cup vinegar
3/4 cup oil
1/2 cup chopped onion
1/2 t pepper
1 t salt
2 t sugar

Drop tomatoes in boiling water for 10 seconds.  Remove peelings and core.  Slice thin and layer in baking dish.  Sprinkle with salt, pepper, and sugar.  Add chopped onions on top.  Pour vinegar and oil over and let marinate in frig for one hour.