1 can green beans
1 can yellow wax beans
1 can red kidney beans
1 medium red onion, sliced into rings

Dressing:

1/2 c. vinegar
1/2 c. vegetable oil
1/2 c. sugar
1 tbsp. parsley flakes
1 tsp. celery seed
salt and pepper

Mix ingredients for dressing and add to beans and onion. Refrigerate.