Potato Salad

6 cups peeled, diced, cooked potatoes
1/3 cup vinegar or lemon juice
1/3 cup chopped green onions
1/4 cup butter, melted
1 tablespoon chopped fresh dill, or to taste
1 teaspoon sugar
1 1/2 cups sliced celery
1 1/4 cups sour cream
3/4 cup chopped orange or red pepper

Combine potatoes, vinegar or lemon juice, onions, melted butter, dill and sugar; toss well.
Microwave at high (100%) for 2 minutes or until warm.
Cover and let stand 1 hour to blend flavors.
Just before serving, stir in celery, sour cream, and chopped pepper.
Add salt and pepper to taste.