Great Gram's Potato Salad

5 boiled potatoes
5 hard boiled eggs
1 medium onion


Chop all.

Sauce:


1 1/2 cup water
1/2 cup vinegar
4 Tbsp flour
3 Tbsp sugar
4 eggs
1 Tbsp butter
1 tsp mustard


Mix water, vinegar, flour, sugar, and eggs. Cook until thick., stirring constantly. Add salt to taste. Add butter and mustard. While warm, add potatoes, eggs, and onion. Chill.