Mayonnaise - cooking recipe

Ingredients

8 eggs
1 c. sour cream
1 c. vinegar
1/2 c. sugar
butter the size of a walnut
1 heaping tsp. dry mustard

Preparation

Beat eggs.
Stir in sour cream, vinegar, sugar, butter and mustard which has been rubbed smooth with a little vinegar.
Put on the stove in double boiler and cook until it thickens.
This will keep for several weeks in a cool place.