Cook

Chef: Are people who cooks for passagers or crewmates on the ships or cooks for customers in resturants. All Pirates can be hungry so many of them need a chef to cook food to fill their belly. Marine bases and Marine ships needed them to feed the soilders to keep them healthy. Commerical ships or curise ship requires them to feed the sellers or passagers.

Story
After the Kuro arc, the Straw Hat Pirates meet Johnny and Yosaku. Yosaku was sick from Sarvy and Nami intruct Usopp and Luffy to make soup to cure Yosaku. Yet the crewa has no cooking experiance and Luffy decided to find a chef for his crew.

Baratie
Opun arriving at the Baratie the Oceangoing resturant, Luffy met a man named Sanji who was a appriance to Zeff along with two partners named Crane and Patty. Luffy was impressed with Sanji's compassion towards Gin and bags him to be his crew's chef but Sanji refused.