I dont think you'll find courses like that at university, you may find stuff related to food science (preservation, storage, food chemistry) and agriculture (the obvious) but not how to cook.
I think he should just take a few casual cooking classes first, not part of any academic award. You can find these literally everywhere. If he still likes it after that, take it further.
You could do some kind of diploma at a TAFE or a training institution i'm sure. It would be difficult to impossible, both schedule and effort-wise, to do a full time diploma and university bachelors degree. Therefore, he would either have to do one or both of these qualifications part time to fit in the other. This is non-withstanding any funding concerns but i think the government will pay for both.
I know you didn't ask this but enjoying cooking is quite different to being a professional chef and all that entails. You might not have choice in what you cook and it will be a bit of a production line churning out the same dish every day (unless you own the restaurant). If he just enjoys cooking, cooking classes are all he needs not the full education of a professional chef (which may include things like finance, customer relations, food safety, etc).