It's a type of sweet candy. The closest I can think of what it would be like is Aplets & Cotlets (those in the Northwest of the US would understand). Aplets and Cotlets (yummy) are a gelatin-like candy that has nuts in it as well as apples or apricots and covered in powdered sugar. It wouldn't surprise me if Aplets and Cotlets are based on Turkish/Persian Delights since the original candy maker came from Armenia which is North of both countries and probably at one point part of the Persian empire.
Turkish delights, if I remember correctly, are also known as Perisan delights. And I don't remember much of my geography any more, but if I remember the Perisan empire comprised of Turkey at one point. Persia is now Iran and is to east of Turkey.... I think. At any rate, Persian and Turkish Delights are similar types of candies.
Now I'm hungry for Aplets and Cotlets since it's so sweet and yummy.
Lookin at pictures of Turkish Delights makes me want one even more. I, too, always wondered about them as a kid. I always wanted one everytime I heard about it in the Narnia story. I've never tried one either. I really should try and get my hands on some.
You know call me crazy, but I always thought the Turkish Delight and the witch was representing women trying to get something out of you through...."Turkish Delight". The funkadelic song brings my point out ever clearer.