Food Association

It's not a very formal guild, but pretty much all members of the same field know each other.
There are a lot of beautiful professions: working in a brewery and selecting the finest ingredients to create different beverages every month, fishing in rivers and lakes of the land and becoming an expert fisher, working with Mother Nature herself, and being a farmer. Or a butcher. Or a bartender.
Becoming a cook lets you really combine all the ingredients, it's not exactly like being an alchemist, but pretty close. The more you help the association, the more opportunities you will have to get into your own business in it.