"We've just taken a giant order before you, so there might be a wait," said the server at Kind Regards Coffee when I ordered my flat white.

"Not to worry," I said, I've got a giant arancini to eat while I wait."

Once I'd said this I wondered about my grammar—presumably "arancini" was plural, so what was singular? "Anrancino", I guessed, and was apparently wrong. According to Wikipedia, it is, of course, more complicated than you'd expect:

The corresponding singular is either the masculine arancinu or the feminine arancina. The eastern side of Sicily tends to use the masculine form, while the western side tends to use the feminine form.

As to the etymology:

Arancini derives from the Sicilian plural diminutive of aranciu ('orange'), from their shape and colour which, after cooking, is reminiscent of an orange.

Can't really argue with that; it's pretty bloody orange, and orange-sized. And it was absolutely glorious, all crisp and crunchy on the outside and warm and delicious on the inside. I think the stall was called Ciccio's, and I commend them to you heartily.