Wash, trim and cut the courgettes into thin fries. Place the strips into in the milk and set aside in the fridge for at least 2 hours.
After two hours drain the courgette fries and place in a large bowl. Sprinkle over some 00 flour and mix until the slices are lightly coated with flour.
Fry in plenty hot vegetable oil until golden. Drain on kitchen paper, season with a pinch of salt and serve.