Sorry if it's a repost, searched and didn't find anything.
I did this at level 90 so I'm not sure if that's a requirement or not, but as long as you have around 300g then that should be enough.
The NPC is called Sungshin Ironpaw in Halfhill Market. From level 1 she teaches MoP recipes and sells the mats for them up until 525, each craft gives 5 levels and most have decent stats on them from eating. The only effort required is that you get 2 Wildfowl Breast from the Glade Sprinters up north in the swamp and 45-50 Golden Carps which can be fished from anywhere in pandaria, or can usually be bought cheap on the AH as they are so common. When you hit 525 get the quest Way of the Brew, complete it and then learn Ginseng Tea from the trainer. Craft this until it goes gray at 555. Doing will get you the achievement The Pandaren Gourmet. Suprisingly not many people know of this yet, have fun cooking!