Potato Salad - cooking recipe

Ingredients

6 to 8 potatoes, cooked, peeled and cut up
1/4 c. vinegar
1/2 c. oil
1 tsp. water
1 onion, chopped
salt and pepper

Preparation

Boil vinegar, oil, water, onion, salt and pepper together and simmer for 5 minutes.
Pour over warm potatoes.
Chill.
Add mayonnaise when ready to serve.