3 C green beans, steamed and chopped
3 C wax beans, steamed and chopped
1 can garbanzo beans, drained
1 (14.5 ounce) can kidney beans, drained
1 (14.5 ounce) can black beans, drained
1/2 cup chopped green pepper
1/2 cup chopped onion
1/2 cup chopped celery
1/2 cup salad oil
1/2 cup vinegar
1/2 teaspoon salt
1/2 teaspoon ground black pepper
3/4 cup white sugar
Combine the green beans, wax beans, garbanzo beans, kidney beans, green pepper, onion, and celery in a large bowl; toss to mix.
Whisk together the oil, vinegar, salt, pepper, and sugar in a separate bowl until the sugar is dissolved; pour over the bean mixture. Refrigerate 8 hours or overnight before serving.