Is it worth budgeting for food or just eating what you like?Watch
Some people have theirs as high as £120 a week, or 4x as much (I don't know what they're buying).
My budget includes everything I would need to cook from scratch, is deemed relatively healthy (nothing sugary, fattening, bad for your body), whilst still be able to help me with my fitness goals. You can be surprised by how much food you can have for £30.
You can also cook relatively good dishes with relatively cheap products. A lot of the high end restaurants can use very basic and cheap ingredients e.g. pasta dishes are mostly cooked flour with tomato sauce and olive oil. The quality of the dish is made with skill as opposed to ingredients. A lot of these basic dishes can be surprisingly healthy.
I've been meaning to learn how to cook well using masterclass.com.