Gyutan (Lidah Sapi BBQ)

Bahan-bahan (2 porsi)

• ¼ lb beef tongue slices ((you can buy it in a Japanese supermarket))
• 1 Tbsp yuzu kosho (Japanese citrus chili paste)
• 1 Tbsp soy sauce
• ½ Tbsp sake
• ½ Tbsp toasted sesame oil
• ½ tsp yuzu juice (extract) ((or lemon juice))
• freshly ground black pepper
• ⅛ onion ((optional))