1.  Place the flour, sugar, orange rind, and juice, egg, egg yolk, and butter in a food processor and pulse to make a smooth dough. Roll into a ball, cover with plastic wrap and chill for an hour or so.

2.  Heat 4 inches of vegetable oil in a wok or deep frying pan.

3.  Roll out the dough on a floured surface to a thickness of 1/4 inch. Cut into ribbons about 3/4 inch wide and 6 inches long.

4.  Deep-fry for a minute or two until crisp and golden. Remove with a slotted spoon and drain on paper towels.
Dust with sugar and serve warm.