In a bowl, combine the Ground Beef (250 gram), Ground Pork (250 gram), Yellow Mustard (1 tablespoon), Egg (1), Worcestershire Sauce (1/4 teaspoon), Miso Paste (1 1/2 tablespoon), Garlic Powder (1 teaspoon), and Onion Powder (1 teaspoon), and mix.
Take around 1/2-3/4 cup of meat and shape it until its about 1cm thick. Press an indent in the middle so that the burger keeps its shape and doesn’t curl up during the cooking process. (Use small pieces of parchment paper between the burgers to stack them up until you ready to cook them.)
Let the patties rest for 30 minutes.
In a cast iron pan, set the stove to medium heat and add a bit of oil. Wait until the pan is very hot. Add in the burger and let it sear for 1-2 minutes. Don’t touch it or flip it!
Add 1/4 cup of water to the pan and quickly put a lid over it and let it steam. Careful, the steam is hot! Let it cook for about 2 minutes, or until the water has evaporated away
Remove the lid and flip the burger and let it cook for another 2 minutes to brown the other side.
At this point, if you are adding cheese to your burger put it on now and put the lid over it for another 30 seconds or until the cheese has melted.
Serve it on a bun with some toppings and enjoy!!