WYR be able to instantly cook any food to perfection, or be able to change what food is the moment it hits your stomach?

Cook instantly: if you have the food in front of you, in any form, just think of how you want it prepared and snap your fingers. The food will be plated in front of you (exact portions, nothing extra is added, including spices). Anything the plate can't hold will materialize into the nearest pot/pan. It will taste like a highly-trained chef cooked it for you.
This applies to both hot and cold food, but not drinks. Also, if you have ingredients that need to be boiled or steamed, you must be near a source of water. However, you don't need a heat source.
Transmogrify: anything you eat will be converted into whatever you see fit. Ice cream? As soon as it hits your stomach, it becomes a handful of spinach. That double cheeseburger? Nope.jpg it's now a lean chicken beast. Solids can only be solid, and liquid can only be liquid.


Source.