1 can (8 oz / 220 g) green beans, drained
1 can (8 oz / 220 g) yellow beans, drained
1 can (8 oz / 220 g) kidney beans, drained
1 medium onion, chopped
1/3 cup olive oil
1/3 cup red wine vinegar
2 Tbs sugar
1 tsp dried parsley
salt and pepper
Mix all ingredients and set aside to marinate for 3-12 hours.