Far as I can tell, someone wrote:
>Candied citrus peel. Orange, lemon, and citron are the usual peels.
>Citrus peel is used in many British desserts. Also used in desserts
>like ricotta pie, fruitcake, etc. Most American fruitcake recipes call
>for candied peel, usually a combination of the three listed above.

Thanks, Wayne. Can I substitute some zest and a bit of extra sugar?