Potato Salad

Salad

1 and 1/2 pint potatoes, cooked and chopped

1 pints beets, cooked and chopped

1/2 cup chopped pickle

1/2 cup olives

1/2 cup capers

Dressing 

yolks of 6 eggs , hard boiled

 salt

2 Tablespoons dry mustard

1 teaspoon black pepper

1 pint olive oil

vinegar to thin 

1 Tablespoon onion juice.