1/2 c. sugar
1 egg, beaten
1 tsp. salt
1 c. cold water
2 tbsp. flour
4 tbsp. vinegar
1 tsp. prepared mustard
3 tbsp. butter

Shake together egg, flour, mustard, and part of the water. Mix together all ingredients and cook until thick. Remove from burner and beat in butter. This may be mixed with whipped cream or half & half or Miracle Whip.