1. Combine the shrimp, mango, and red onion in a large bowl.

2. In a separate, smaller bowl, whisk together 60ml (2 fl oz) of olive oil, 6g (1 tsp) of salt, and 3g (1/2 tsp) of black pepper until well combined.

3. Add 15g (1/2 oz) of chopped fresh coriander and 15g (1/2 oz) of diced red chili pepper to the bowl containing the shrimp mixture.

4. Squeeze the juice of 1 lime over the top of the mixture and toss gently to combine all the ingredients.

5. Cover the bowl with plastic wrap and refrigerate at 4°C (39°F) for at least 30 minutes to allow the flavors to meld together.

6. Just before serving, slice 1 ripe avocado and add it to the bowl.

7. Toss the mixture gently and serve chilled, straight from the refrigerator.