This recipe is more of an idea than a recipe. There are no rules when it comes to mixing your own burger, but there are a few suggestions that you might like to follow.
You can make a basic beef burger just by rolling up some balls of mince mixed with an egg and a handful of breadcrumbs, but if you feel like giving this one a go, you can also try any combination of the following ingredients:
finely chopped onion
finely...