Wafu Hambagu (Japanese Hamburger Steak)

Bahan-bahan (4 porsi)

• ½ onion
• 1½ Tbsp neutral oil ((for cooking the onion))
• ¼ cup panko (Japanese breadcrumbs)
• 2 Tbsp milk
• ½ lb ground beef
• ½ lb ground pork
• 1 large egg (50 g w/o shell)
• 1 clove garlic ((crushed or minced))
• ¼ tsp nutmeg
• 1 tsp Diamond Crystal kosher salt
• freshly ground black pepper
• 1½ Tbsp neutral oil
• 3 inches daikon radish ((use the top green part that‘s sweet and less bitter))
• 2 shiso leaves (perilla/ooba) ((or scallion/green onion for garnish))
• ½ cup ponzu ((you can make Homemade Ponzu Sauce))
• 1 tsp sugar
• ¼ tsp yuzu kosho (Japanese citrus chili paste) ((for a citrusy, spicy kick; optional))