Old-Fashioned Potato Salad

9 cups of cubed unpeeled round red potato (about 3 lbs.)
1/2 cup of diced onion
1/2 cup of diced celery
1/4 cup of sweet or dill pickle relish
3 Hard-boiled eggs, sliced
1 clove garlic, minced
3/4 cup of sour cream
1/3 cup of mayonnaise
2 tablespoons of chopped fresh parsley
1 teaspoon of dry mustard
3/4 teaspoon of salt
1/4 teaspoon of black pepper

Place the potatoes in a large pot, cover with water, and bring to a boil. Cook for about 8 minutes or until tender and drain. put the cooked potatoes in a large bowl with the onion, celery, pickle relish, and the sliced eggs and mix gently. Combine sour cream,
garlic, mayonnaise, parsley, dry mustard, salt, and black pepper in a small bowl and stir until mixed well. Pour the sour cream mixture over the potatoes and gently toss to coat. Cover and chill.