This is a great use for the weird odds and ends of peppers, onions and celery. Most vegetables, chopped finely, will mesh with the dressing, so let loose your creativity.
By making this dressing yourself, you can avoid all the corn syrup in the store-bought stuff. Plus, it’s really just combining other stuff you probably have in your fridge and by making it yourself, you won’t lose much of your fridge-life.
1 cup ketchup
1 cup mayonnaise