There is one simple thing far too few writers do which can make all the above rules intuitively apparent: read every page out loud. I self-publish books and do this, quite literally, for every page, even (most recently) for a 300-page book (and at that, of course, I find missing words, etc., later). Your ear will tell you quickly what you need to change. But trying to "fake" this by reading under your breath or silently to yourself too easily allows you to "cheat". Out loud means out loud (OK, maybe out medium, if you have modulation issues.) As for being a food writer specifically, I suppose I am that, officially enough. Aside from my various self-published projects, I have an academic essay out on the subject and am waiting for the official announcement of another project to which I contributed in some significant ways. But that raises the question of whether people who want to be food writers want to just be columnists (I'm not) or food critics (nope) or want to write (as I do) on food history, for instance. Or would someone like me be called a "food historian" as opposed to some famous writers on food in magazines and newspapers (whose "history", alas, is often pure myth, but is also what far more people are likely to read)? At any rate, good writing is good writing and certainly any writer should learn it (and read it as much as possible - Willa Cather's a great place to go for lessons in style). Your subject should be something you care about, your voice should be freed rather than created and as for outlets and starting points, these days, that's what blogs are for.