Ingredients

• 14 oz large fresh mushrooms, preferably with 2-inch caps
• 5 scallions
• 3 tablespoons sake
• 2 tablespoons Japanese soy sauce (shoyu)
• 4 tablespoons Japanese rice vinegar
• 1/2 teaspoon salt
• Finely shredded scallion

Instructions

1. Wipe the mushrooms with a damp cloth. If they are large, quarter them; otherwise, halve them. Finely chop the scallions.
2. Put the mushrooms and scallions in a bowl. Add all the remaining ingredients and toss to mix. Leave the mushrooms to marinate in their dressing for 5 minutes, then toss again and set aside another 5 minutes.
3. Toss the mushrooms once more before serving, garnished with scallion shreds if you like.