1.Place zucchini in a colander and sprinkle with salt. Set aside for 15 minutes. Rinse. Then squeeze out as much liquid as possible with your hands or in a clean tea towel.
2.In a bowl, combine zucchini with haloumi, flour, eggs, onion, juice and mini. Season to taste. Heat oil in a large heavy- based frying pan on high. Spoon heaped tablespoonfuls of mixture into pan, forming fritters, in 6 batches. Cook 2-3 minutes on each side, or until golden and firm. Drain on paper towel.
3.In a small bowl, combine yoghurt and mint. Top each fritter with a dollop of yoghurt mixture and a small mint leaf.
Cook the fritters as close to serving time as possible as the haloumi can go tough.