"Homemade Japanese hamburger steak recipe that melts in your mouth, served with a red wine reduction sauce...."
INGREDIENTS
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½ onion ((6.8 oz or 192 g))
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1 Tbsp neutral flavor oil (vegetable, canola, etc)
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¼ tsp salt (kosher or sea salt; use half if using table salt) ((for onion))
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Freshly ground black pepper
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¾ lb ground beef & pork combination ((14 oz or 386 g) (See Notes))
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1 large egg
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2 Tbsp milk
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⅓ cup panko (Japanese breadcrumbs) ((20 g))
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1 tsp salt (kosher or sea salt; use half if using table salt) ((for meat mixture))
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Freshly ground black pepper
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½ tsp nutmeg
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1 Tbsp neutral flavor oil (vegetable, canola, etc) ((to cook))
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¼ cup red wine ((for steaming))
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1 Tbsp unsalted butter
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3 Tbsp red wine
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3 Tbsp water
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3 Tbsp ketchup
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3 Tbsp tonkatsu sauce ((or Worcestershire sauce))