> And if it's true to say, "a Jaffa Cake is a cake" (or "a Jaffa Cake is a biscuit") then that also tells us something about the world, i.e. about the properties of a Jaffa Cake, as well as about the meaning of the word "cake".

And of course it's even more fun because I have to mentally substitute "cookie" every time I read "biscuit".