I'd tend to agree with webmonkey. On the con- side of fast food places, they follow a very set formula, the holy commandments from head office. These work well for a fast food place, specifically the one they're designed for, but not for much else. Kinda like taking an apprenticeship on how to work only on '65 Cutlasses, great for Cutlasses, but not for any other car.
Hospitals have pros and cons too.. Yup, good pay and bennies, even real food too, if it's a good hospital, but they have unions and union workers. Think working with 16 yr olds is tough, try telling a 4o yr old cook to clean up after himself. If you catch him before he hits the time clock you might even have a chance. Try getting a 50 yr old to work 2 hrs overtime to cover for a shift of a fellow cook who called in sick, try getting the same guy to keep his #$%^!-ing cell phone in his locker while working on company time.
Alot of hospitals don't have a real Chef, per say, they have dietary technicians and kitchen managers, some fantastic purchaser/recievers, but if you want to learn how to use a Chef's knife, for instance, or how to make appetizers, or setting up or carving on a buffet, don't look for help in a hospital kitchen. It's you and whatever book you can buy, beg, borrow, or steal.
Life's full of choices, but with all things in life, you can't have your cake and eat it. Either you make serious coin, and wash the fryer smell out of your hair every night, or you earn less and learn as much as you can from some very talented people.