1.Combine kohlrabi, parsley, garlic, egg and flour in a bowl.
2.Heat a third of the oil in a 20cm (base measurement) frying pan over moderate heat. Spoon kohlrabi mixture into pan; flatten to form a large fritter. Cook for 6 minutes or until base is golden. Carefully invert onto a plate, then slide back into pan. Cook for 5 minutes more or until golden. Invert onto a chopping board. Cut into wedges.
3.For the dipping sauce, combine remaining oil, onion, chilli, vinegar, yogurt, dill and lemon juice in a glass or ceramic bowl. Season.
4.Sprinkle fritter wedges with chives and serve with yogurt sauce and lemon cheeks.
Kohlrabi is a type of cabbage. If unavailable, use 400g finely chopped broccoli stem.