Kroštule (Croatian angel wings)

Instructions

1. In a large bowl, mix the flour, sugar, salt and lemon zest.
2. Add the eggs, the extra yolk, the olive oil, the rum and the vanilla, then knead until you have a firm, smooth dough.
3. Wrap the dough in clingfilm and let it rest for 30 minutes in the fridge.
4. Roll the dough out very thinly, about 1 mm thick, with a rolling pin or a pasta machine.
5. Cut strips about 10 cm long and 2 cm wide, make a small slit in the centre of each and pull one end through it.
6. Heat the oil to 175 °C and fry the kroštule briefly, until golden and crisp.
7. Drain on kitchen paper.
8. Dust generously with icing sugar before serving.