Mince the onion – you can use the food processor for this recipe; that makes it very easy – and then rinse in cold water. (This takes the sharpness off. You can skip the rinsing but it’s not as good.)

Mix all ingredients except salt together, taste for salt and add as required, and voila!

It will keep, covered and refrigerated, for 4 to 5 days.

Mine never lasts that long.