Apple Or Potato Salad Dressing - cooking recipe

Ingredients

1/2 c. sugar
1 tsp. dry mustard
1 Tbsp. vinegar
2 Tbsp. butter
1 tsp. flour
2 to 3 egg yolks, beaten
3/4 c. cream
2 Tbsp. mayonnaise or more
1 1/2 qt. potatoes, cooked and cubed

Preparation

Mix dry ingredients.
Add eggs, cream and vinegar.
Cook in double boiler until boil starts.
Cook on simmer 1 to 2 minutes until thickened.
Do not boil.
Add mayonnaise.
Mix with potatoes.