Im talking about a diet that:

Allows you to build muscle without accumulating fat when bulking.
Allows you to loose fat without loosing muscle when cutting
Induces an increase in serum anabolic hormones naturally

Gaining muscle without gaining a little fat is a hard thing to do. Same thing with cutting without losing a little bit of muscle. You could try reading Burn the fat feed the muscle, by Ton Venuto.

Email me at chilechinchilla@gmail.com. I can send you some great books if your interested.