[Roark66]

>Plus, various foods like grains, root vegetables, onions, and even apples could be stored for months using proper techniques. They didn't have the luxury we have of not paying much attention to how we store things and just replacing them when they go bad, so they became quite good at this.

I would also expect them to have various special variaties of apples/pears that actually improved their taste with storage. For example a variety that was best with 2 months of storage, another one that was best after 6 months.

Then you have cheeses, yoghurts, milk. Those things could be available year round. One would expect the king of France to have quite a variety of cheeses at his disposal. Then we have meats prepared in a hundred different ways. From simple roasting, to gelling, pickling like modern hams. And so on.

Then we have various types of wild mushrooms. I wonder if the king ate wild mushrooms and who picked these mushrooms for him... Poisoning would be so easy to get away with if he did.

It would be tough without potatoes, tomatoes and peppers, but I think food-wise I'd be just fine (assuming money and power).