Step 1

For the guacamole, using a mortar and pestle, pound the onion, garlic and 1 tsp salt flakes to a paste. Transfer to a bowl with avocado and use a fork to coarsely mash. Add lime juice and stir to combine.

Step 2

Place the tomato and cucumber in a bowl and stir in lime juice.

Step 3

Arrange the corn chips on a serving platter. Top with guacamole, green mango, crab and tomato mixture. Sprinkle with chives to serve.