Step 1

Place the sliced onions in a bowl of ice water and put in the fridge for about an hour.

Step 2

When the onion slices are good and cold, drain the water and tap them dry with a clean cloth.

Step 3

Now mix the ketchup, tomato puree, chilli powder, cumin seeds and salt with the sliced onions.

Step 4

Stick in the fridge for about 45 minutes before serving.

Step 5

This recipe is perfect with papadams though I could eat it on its own!