Chili con carne

1 cup chopped onion
1/4 cup chopped green pepper
1 lb. ground beef
2 tbsp. fat
1 14oz can red kidney beans
1 3/4 cups tomatoes
1 to 2 tbsp. chili powder
1 1/2 tsp. salt
1/4 tsp. pepper
1 tbsp. vinegar

Brown onion, green pepper and ground beef in fat.
Add rest of ingredients.
Simmer 1 hour, stirring frequently.