Sophie asks the giant not to eat her. The giant doesn't really answer the question, which is not encouraging. He says it's true that giants tend to eat people, and that she's in Giant Country now.
The giant gives the example of a Bonecrunching Giant he knows who only eats people from Turkey. When Sophie asks why, the giant explains that Turkish people taste like turkey. Logical.
The giant goes on to name what people in different countries taste like. The Greeks taste greasy, humans from Panama taste like hats, Welsh taste fishy, humans from Jersey taste like cardigans, and the Danish taste like dogs.
We should probably mention that the giant has a funny way of speaking, inventing and mispronouncing many words. He calls human beings "human beans." Maybe they taste like beans.