Barbecued prawns with sweetcorn recipe

Ingredients

• 4 corn cobs (or 1 per person), preferably in their husks
• 20 shell-on king prawns
• 1 amount of neutral oil, for cooking
• 150 g butter
• 1 green chilli, finely chopped
• 4 lemon wedges, to serve
• 2 tsp fennel seeds
• 1 tbsp paprika
• 2 tsp onion powder
• 2 tsp garlic powder
• 1 tsp cayenne
• 1 tbsp sea salt
• 1 1/2 tsp ground white pepper
• 1 tsp dried thyme
• 1 tsp dried oregano