• Gather all the ingredients
  

Preparation

• Chop the onion finely.
  
• There are 2 options to make the onion soft enough. Microwave for 1 minute or saute on medium heat until soft.
  
• While the onion is cooling, add the ground beef and pork in a bowl and add salt. Mix until the meat is well mixed and gets sticky.
  
• After the onion is cool, put the onion, panko, milk, egg, nutmeg and black pepper in the bowl and mix with the meat until everything is combined. You can use a silicone spatula/spoon to mix.
• Add egg, nutmeg, and black pepper and mix everything again.
• Divide the mixture into 4. If you prefer smaller pieces, you can divide it into more pieces.
  
• Toss it from one hand to the other. I do this 8-10 times in order to get rid of the air inside the meat. This way the Hambagu won't crack while cooking.
• Shape the Patties 0.8 inch (2cm) thick and make a dent in the middle of the patties.
  

To Cook Hambagu

• Heat a thin layer of oil in a frying pan over medium-high heat and place the meat patties in the pan with the dent side up. Cook until one side gets brown (about 2-3 minutes).
  
• Turn the patties over and cook the other side till brown.
  
• Add hot water to the pan. Cover with a lid and cook for 12 minutes with a low heat.
• Uncover and cook for another 3 minutes. Check if they are done by inserting a stick.*1
• Do not wash the frying pan! We will use it for the sauce.*2

To Make Sauce

• Gather all the ingredients
  
• We will use the same frying pan (without cleaning).*2
  
• Wipe the pan lightly and add ketchup, Worcestershire sauce, and soy sauce in a bowl and mix. Then put to the pan and set to medium low heat.
• After mixing well, bring it to boil once and then turn the heat to low for 1 minute. Then, turn off the heat.*3

To Serve

• On top of the Hambagu, put the homemade sauce. I also suggest that you put some vegetables such as broccoli, carrots, potatoes or whatever you prefer!

If You Want to Store

• You can store the Hambagu by wrapping the individual patties with cling wrap and putting them in a zip lock in the fridge. You can store them in the fridge for up to 2- 3 days and in the freezer for up to a month.