It sounds a bit bizarre, but there is traditional Greek way to chop an onion and, once you get the hang of it, it’s a useful technique.
In the past, Greek housewives cooked with few implements and kitchen gadgets – they produced amazingly complicated dishes in very basic kitchens. So this method for chopping onions developed, giving a very fine dice, without a chopping board.
To chop an onion the Greek way, you first peel the onion. Then take a slice across the top of it, exposing the rings.
Now slash across the top in a criss-cross pattern. Then slice through the rings of the onion and you will find that the onion will come away in a fine dice.