Quick, easy, and yummie! 2 TBS. finely chopped onion 1/4 cup white vinegar 3/4 cup corn oil 4 cups mayonnaise 1 clove garlic, minced or more to taste 1/4 cup sour cream 1/2 tsp. fresh lemon juice 1/4 cup water 1 1/2 tsp. Worcestershire 1/4 tsp. fresh ground pepper 1 1/4 tsp. oregano 3/4 tsp….