Step 1

This first step is optional but will get you really cold and crispy onions. Place the chopped red onion in a bowl of ice-cold water with a squeeze of lemon juice for 10 minutes. Strain and shake off the excess water and return the chopped onion to the bowl.

Step 2

Add the green chillies, coriander (cilantro), mint sauce, chilli powder, nigella seeds, ketchup and smooth mango chutney and stir well to combine. You want the onion to be completely coated with the other ingredients.

Step 3

Add salt and lemon juice to taste and if you prefer a red glow like you find at many curry houses, add the red food colouring. Stir well to combine it all and place in your fridge for about 30 minutes or until ready to serve.