You're in a very unique position Kitty. There are very few culinarians right now, and you have the potential to be very useful to a lot of people.
I think the keys to being a successful culinarian are in 1) Understanding the game mechanics and 2) Advertising your food
To understand the games mechanics all I can say is to check the link that Ket has provided:
http://lodestone.finalfantasyxiv.com/rc/diary/top?cicuid=6441256If you were able to make me
Stuffed Cabbage and it really boosted my accuracy based on my dex and lightning matching it, I would be ready to pay you crap tons of gil.
And if you could advertise, hey I have a bunch of this cabbage, it can really boost your accuracy if you set DEX ~80 and Lightning ~60, and shout around Uldah to all the high levels, I guarantee you'll get lots and lots of buyers. The same goes for lower level accuracy food, too.