Start by grating or juicing an onion. If you hand grate the onion, squeeze the juice from the grated pulp into a bowl. You won’t need a lot of onion juice here – a tablespoon or two will work great (you could also just add the grated onion if you prefer).
Next, mix the onion juice with your ground beef, a bit of Worcestershire sauce (not too much), salt, and fresh, ground pepper.
Form the patties into 2-2.5 inch thick patties, then grill or pan fry them until they’re cooked to your liking.