Are you wanting to ditch the dairy and see what changes you notice? Or perhaps you want to try out a new recipe without setting off a food allergy. The main ingredients in most traditional recipes are usually the culprits that set you off. It could even be that you're just one or two ingredients short of the recipe you want to try and don't have time to run to the store. For all these moments and more, it's helpful to know a few common ingredient substitutes to hack into your cooking skills.