So, if you're like me and you find that one of your largest expenses is food but you need to be allocating scarce resources to much more critical things like album covers and book editing, you can cut corners by eating on a budget. This doesn't have to mean skipping meals or doing the Retsuko thing of having bread crusts dipped in mayo for lunch; there are other options that are more satisfying and probably healthier while still being cost-conscious.
The Stardew Valley Diet
Stardew Valley a while back, the only thing my character would eat for dinner was spaghetti, day in, day out. This was done partially out of laziness but also for budget reasons. Being lazy and cheap in real life as well, I thought, "hey, why not apply that idea to my actual diet?" So I did, and the results were great. For about two or three dollars worth of ingredients, I can make three huge servings of pasta in just a few minutes with no cooking knowledge whatsoever other than how to boil water (by the way, if you want my recipe for Spicy Asian Fusion Garlic Spam-ghetti, just let me know.)
Tea and Water
Other obvious ideas: don't waste food (you can always make a decent toast out of the loaf-ends) and eat cheap stuff (in my twenties I used to have a cup o' noodle and a PBJ for lunch every day). I'm sure there are many more ways to effectively eat on a budget, but these are just some of the things that have worked for me that I'm sharing with you today. Employing them has, in part, allowed me to not only invest in my various artistic endeavors but also to enjoy a nice pizza every once in a while.