Finely chop the onion. Cook it at medium heat with a tbsp of oil for 3-4 mins. Divide the cooked onion into two portions
Remove the package, and add the ground beef to the mixing bowl. Use a fork to break the slab and loosen it up
Add black pepper, salt, egg, worcestershire sauce, milk, panko crumbs, and half of the cooked onion. Vigorouly mix for 4-5 mins
Cover the cutting board with a piece of plastic wrap. Pour 2-3 tbsp oil to a small bowl
Tap both hands to the oil and rub against each other to coat them with oil
Divide the seasoned beef into 4-6 portions. Take one portion at each time. Toss the meat ball (pattie) between two hands for 10-15 times to drive out air in the meat and make the surface smooth
Cover the patties with another piece of plastic wrap and rest for 30-40 mins
Add all patties to the pan, and turn the heat to medium. Cook each side for 2-3 mins.
Turn the heat to low. Add 3-4 tbsp cooking wine (or water, or red wine), and cover the pan with a lid, and cook for 5-6 mins. Poke the hamburger, and if the juice that comes out is clear, the cooking is done
Take out the hamburgers. Remove excess amount of oil/grease. Add tomato paste (or ketchup), cooking wine (or water, red wine), the other half of the onion, and worcestershire sauce. Reduce at low to medium heat for 3-4 mins. Adjust taste with an addition of salt. Turn off the heat
Add all the hamburgers to the pan to coat them with sauce
Serve with fries or veggies