Grate and salt an onion, press it in a strainer in order to get the juice out, use the onion pulps with black pepper and paprika,a bit olive oil, add to the ground meat and blend well, make a burger out it.
For the stake , let it get aged a bit in fridge about two days atleast, pound it well, lots of black pepper, and sizzle it with butter, rosemary and little cumin powder on cast iron.
