The food business goes from food sales to food processing which generally involves making all the processed foods we eat all the way from bread to candy to meats, poultry and fish. It's generally messy work, is learned mostly on
the job and generally doesn't require the skills
that many other trades do although the pay is
generally low. There are fish and poultry workers often working in large processing plants. Join the military, take the cooking trade then after four years get a civilian job.
There is a Directory of Food Service Distributors out there.
Food service books are at #647.95 or TX911.3 at the library.
Food service is much bigger than restaurants. It covers all institutional buildings like hospitals, jails, senior retirement homes, mental institutions, college cafetarias, grade school cafetarias, the military, oil exploration companies, shipboard services, etc.
There are many food businesses anyone can start almost immediately. The only problem is government regulations.