c("In a saucepan, combine sugar, flour, salt and mustard; stir in eggs.", "Gradually stir in vinegar and water until smooth.", "Bring to a boil over  medium heat, stirring constantly; cook and stir for 2 minutes.", "Cover and  refrigerate. Just before serving, combine desired amount of base with an  equal amount of mayonnaise. Serve as a dressing for potato salad,  coleslaw or salad greens.", "Refrigerate leftovers.")