Prawn tacos with avocado lime sauce

Name: Prawn tacos with avocado lime sauce
Prep time: 20 min
Cook time: 50 min
Total time: 1 h 10 min
Cuisine: American, Mexican, Latin American
Ingredients: 120 g Parmesan cheese; ½ tsp dried basil; ½ tsp dried chilli flakes; 1 bunch fresh coriander; 80 g mayonnaise; 1 - 2 tbsp freshly squeezed lime juice; ½ avocado; 1 pinch salt; 1 pinch ground black pepper; 1 garlic clove; 1 long red chilli; 20 g extra virgin olive oil; 350 g medium raw prawns; 1 - 2 tsp taco seasoning; ¼ iceberg lettuce