1/3 c. sugar
1/3 c. prepared mustard
1/3 c. condensed tomato soup
1/3 c. butter
3 tbsp. vinegar
1 egg yolk or 1 whole egg (slightly beaten)

Mix ingredients in a saucepan. Boil 1 minute, stirring occasionally. Makes 1 1/4 cup sauce. Serve over ham, meat loaf, hamburgers or frankfurters. Great with ham.