1 (#303) can red beans
1 (#303) can yellow wax beans
1 (#303) can green beans
1/2 c. onion, cut fine
3/4 c. sugar
1/2 c. vinegar
1/2 c. salad oil
1 tbsp. salt
1 tsp. pepper

Mix all. Cover and refrigerate for 12 to 14 hours.