Mix the garlic, chilli, paprika, olive oil, sugar, yogurt, half of the lemon juice, salt and pepper together.
Place the skate wings in a flat dish. Pour in the marinade and mix well. Cover and leave to marinate for 1 hour. Place the marinated fish under a grill, brushing both sides with olive oil. Grill for 15-20 minutes. Turn at 5 minute intervals.
For the lemon and herb sauce, melt the butter in a pan, add in the rest of the lemon juice and herbs. Heat through gently. Season to taste.
Serve the grilled skate wing with lemon sauce, a wedge of lemon and stir fried ribbon carrot and courgettes or a green salad.
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