Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
  1                cup  water
  1                cup  white wine vinegar
     3/4           cup  sugar
     1/2           cup  pastry flour
  1           teaspoon  kosher salt
  1           teaspoon  dry mustard
     1/2           cup  unsalted butter
  4                     egg

Preparation:

whisk flour, salt, and mustard into eggs combine water and vinegar in a saucepan, over a low flame combine vinegar mixture and egg mixture in the top of a double-boiler heat and stir until thickened stir in butter remove from heat and cool cover and chill for 2-48 hours serve slightly chilled

Nutritional Information:

106 Calories (kcal); 7g Total Fat; (56% calories from fat); 1g Protein; 10g Carbohydrate; 62mg Cholesterol; 133mg Sodium