Created by Crocus on October 25, 2011
Step 1: Drain green & yellow beans. Drain and rinse kidney beans. Add onion slices to beans.
Step 2: Whisk all other ingredients together and pour over beans. Let sit, refrigerated, at least overnight.
Step 3: Drain or serve with a slotted spoon. If you drain, keep dressing to put leftovers back in. Keeps for several days in refrigerator.