This is a very interesting instructional video on how to make an onion relish. This is a very good food. Take white or red onion. Now peel off the outer layers of the onion. Now cut the onion into small pieces. You can cut the onion with a straight knife to get uniform sized pieces. Now put them into the boiling water in a pan. Now you have to filter the water. Now you can add salt, vinegar and sugar. You can keep this in the fridge for a few hours. Then you can add a few raw leaves and now the onion relish is ready.