Classic Potato Salad
["1 c. mayonnaise", "2 Tbsp. vinegar", "1 1/2 tsp. salt", "1 tsp. sugar", "1/4 tsp. pepper", "4 c. cooked, cubed, peeled potatoes (5 to 6 medium)", "1 c. sliced celery", "1/2 c. chopped onion", "2 hard-cooked eggs, chopped"]
["Combine mayonnaise, vinegar, salt, sugar and pepper.", "Stir in remaining ingredients.", "Cover; chill.", "Makes 5 cups."]
["mayonnaise", "vinegar", "salt", "sugar", "pepper", "potatoes", "celery", "onion", "eggs"]