Man, leveling cooking was so shitty back before they added that skilling off lower level thing. When I went to 110 it was off Riverfin Soup, which was I'll admit a little bit profitable or at least break even, but my god at 400k/synth I'd have to save up 10m worth of fins per crafting session. Plus, while the food was INSANELY good, no one wanted to use 400k food so it didn't sell that fast.
Magma Steak and Cerberus Steak both were a little cheaper but complete losses since no one really bought them.