Daging Sapi dan Tahu Rebus (Niku Dofu)

Bahan-bahan (3 porsi)

• 1 onion ((7 oz, 200 g))
• 1 g reen onion/scallion ((1 oz, 35 g))
• 4 shiitake mushrooms
• 14 oz medium-firm tofu (momen dofu)
• ½ lb thinly sliced beef (such as ribeye) ((for vegan/vegetarian, you can use king oyster mushrooms or other Japanese mushrooms))
• 1 cup dashi (Japanese soup stock)
• 2 Tbsp sake
• 2 Tbsp mirin
• 2 Tbsp sugar
• 3 Tbsp soy sauce