Before starting off, I personally think chef is one of the tougher job compare to the others... If you wan a simpler 1 I recommend alchemist/ blacksmith just picking stuff by the road side
Chef
-cook food (what else? nothing else)
there's only 2 kind of food you can cook
-buff food
-healing food
-processed materials (needed for higher level foods)
Healing foods
you should notice when you use this you will be sitting down and regen hp/sp a lot faster than usual.