1 c. oil
1 c. vinegar (Regina white wine)
2 c. potato water
1 tbsp. sugar
1 tbsp. salt
1/2 tsp. white pepper
1 tbsp. finely grated onion
2 tbsp. mashed potatoes

Boil potatoes and set aside. Mix all ingredients in blender; shake well before serving. Keeps well in refrigerator.