Ayam Shoyu Mentega

Bahan-bahan (2 porsi)

• 1 lb boneless, skin-on chicken thighs
• ¼ tsp Diamond Crystal kosher salt
• ⅛ tsp freshly ground black pepper
• 1 Tbsp neutral oil
• 4 Tbsp sake ((or water; for steaming))
• 1 Tbsp unsalted butter
• 2½ Tbsp soy sauce
• 2 Tbsp sake
• 1 Tbsp mirin
• 1 Tbsp sugar