Place the garlic, chilli, lemon juice, oil, cayenne pepper, paprika, sugar, salt and pepper in a small food processor and process until a coarse paste forms.

Halve the sauce and set one portion aside. Preheat a char-grill pan or barbecue over high heat. Wrap each prawn around a slice of chorizo and thread 2 prawns onto each skewer.

Brush with one portion piri piri sauce and oil and sprinkle with salt and pepper. Cook the skewers for 3 minutes each side or until the prawns are cooked through. Serve with reserved piri piri sauce and grilled lemon. Makes 8.