Potatoes
Onions
2 tbsp. vinegar
1/2 c. mayonnaise
1/2 c. sour cream
1-2 tbsp. sugar

Fry potatoes and onions. Add vinegar. Let cook 5-10 minutes slowly. Mix mayonnaise, sour cream, and sugar. Turn heat off of potato mixture and add sauce mixture to potatoes. Let set 5-10 minutes on top of stove with burner off.