Don't use up ingredients when cooking.
     This  glitch  will allow you to make all the food items you want,
without using up the ingredients that go into them. Basically allowing
you to make infinite items as long as you have at least one of each of
the base items that go into it.

     To do so, just select the items to combine as normal, and just as
you click the "Cook" button, hit the ESC key quickly.

     This will close down the cooking window.

     You  will  see that the item still gets made, but the ingredients
that  you  used won't get removed. Allowing you to make as many as you
like.

*Tested on v1.0.3*