Avocado and smoky prawn salad with charred corn and buttermilk dressing - Australian Avocados

Ingredients

• 3 ripe Shepard avocados
• 16 large green king prawns, peeled and cleaned, tails intact
• 2 ½ tbsp olive oil, plus extra for drizzling
• 1 garlic clove, finely chopped
• Finely grated rind of ½ lemon, juice of 1 lemon
• ½ tsp smoked paprika
• 2 corn cobs, husks and silks removed
• 2 baby cos, outer leaves torn, hearts cut into wedges
• ½ cup flat-leaf parsley leaves
• ¾ cup well-shaken buttermilk
• 2 tbsp store-bought mayonnaise
• 2 tbsp extra-virgin olive oil
• 2 tbsp finely chopped chives, plus extra to serve
• Finely grated rind and juice of ½ lemon, or to taste