Mom'S Potato Salad - cooking recipe

Ingredients

8 medium-size potatoes
1/4 c. chopped onion
1/2 c. chopped celery
4 Tbsp. salad oil
2 Tbsp. cider vinegar
1 1/2 tsp. salt
1/2 tsp. dry mustard
1/8 tsp. pepper (optional)
3 boiled eggs, chopped
2 Tbsp. chopped parsley (optional)
1/2 c. mayonnaise
2 Tbsp. milk

Preparation

Cook diced potatoes 20 to 30 minutes or until tender.
Drain and spread on towel to cool.
After cooling, place potatoes in a mixing bowl.
Sprinkle onion and celery on top of potatoes.