Sauce for Chiles Rellenos

Serve this over chiles rellenos.

2 tablespoons oil
1 tablespoon flour
1/4 cup chopped onion
Salt
Pepper
1 (15 ounce) can tomato sauce
1 bay leaf
1/2 cup tomato juice
1 garlic clove, mashed

Heat oil in a saucepan and brown flour in it lightly. Add onion, salt and pepper and stir for 1 minute. Add tomato sauce, bay leaf and tomato juice. Cook until sauce thickens. Remove bay leaf.