Spicy prawn cocktail with avocado recipe

Ingredients

• 150g king prawns cooked and peeled and chilled
• 1/2 red onion finely chopped
• 1/2 red chilli finely chopped
• A handful of freshly chopped coriander
• 150g of fresh cucumber chopped
• 1 tbsp of tomato concentrate
• 1 large ripe avocado
• 1 tbsp of lemon juice
• 2 tbsp of Greek yogurt
• Salt
• freshly ground black pepper