Ingredients

1 piece ginger (1 1/2 inches), peeled

3 cups Homemade Fish Stock, or thawed frozen fish stock

1 large leek, cut into 1/4-inch-thick slices, well washed

3 star anise

3 tablespoons dry sherry

1 1/2 tablespoons low-sodium soy sauce

1 teaspoon canola oil

2 shallots, finely chopped

3 cloves garlic, minced

12 ounces white button mushrooms, cut into 1/4-inch-thick pieces

Salt and freshly ground black pepper

10 canned water chestnuts, cut crosswise into 1/4-inch-thick slices

1 head Chinese (napa) cabbage, cut crosswise into 1/2-inch-thick slices

6 scallions, thinly sliced on bias, plus more for garnish

6 flounder fillets (5 ounces each)

Preparation

Thinly slice half the ginger; cut remaining half into 1 1/2-inch-long matchsticks, and reserve. Place sliced ginger, stock, leek, star anise, sherry, and soy sauce in a small saucepan. Bring to a boil. Reduce heat, and simmer 15 minutes. Strain and reserve stock.

In a large, straight-sided saucepan, heat oil over medium-low heat. Add shallots and garlic; saute until translucent, about 5 minutes. Add mushrooms; season with pepper. Raise heat to medium high; cook until browned, about 7 minutes. Add water chestnuts, and cook 2 minutes. Transfer mixture to a bowl.

Place cabbage and sliced scallions in saucepan. Season fillets with salt and pepper. Roll up fillets; place on cabbage. Add reserved fish stock and cooked vegetables. Bring to a boil. Cover. Reduce heat; simmer until fish has cooked through, about 15 minutes. Garnish with ginger matchsticks and scallions. Serve.