Hanetsuki Gyoza with Thanksgiving Leftovers

• 1 1/2 cups chopped roasted turkey (preferably dark) meat
• 1 1/2 cups roasted Brussels sprouts, chopped
• 1 cup mashed potatoes
• 2 tablespoons gravy or gelatinized turkey juices
• 3 to 4 scallions, chopped
• 2 to 3 garlic cloves, minced
• 1 teaspoon grated fresh ginger
• 2 teaspoons soy sauce
• 1/2 teaspoon toasted sesame oil
• 1/2 teaspoon kosher salt, plus more to taste

Freshly ground black pepper, to taste

• 1 package round Japanese gyoza or Korean mandu wrappers (about 40 to 45 skins)

Neutral oil, like canola, for frying

Toasted sesame oil, for frying

• 2 tablespoons cornstarch
• 1 cup cold water

Dipping Sauce

• 3 tablespoons soy sauce
• 2 tablespoons rice vinegar or apple cider vinegar
• 1/4 teaspoon la-yu or chile oil, plus more to taste
• 1 scallion, chopped

Toasted white sesame seeds

1. In a large bowl, combine turkey, Brussels sprouts, mashed potatoes, gravy, scallions, garlic, and ginger. Mix until well-combined. Add soy sauce, sesame oil, salt, and pepper. Mix until well-combined. Taste and adjust seasoning. This will yield about 3 1/2 to 3 3/4 cups of dumpling filling.
2. Prepare the dumpling pleating station: Fill a small bowl with water (you will dip your fingers in here to help seal the dumplings). Keep a damp paper or kitchen towel over the dumpling wrappers when not in use. Sprinkle some corn starch on a large plate or small sheet pan.
3. Assemble the dumplings: Run a wet finger around the perimeter of a dumpling wrapper. Place about 1 1/2 to 2 teaspoons of dumpling filling in the center of the dumpling wrapper. Fold over to create a semi-circle shape and pinch the top of the dumpling closed. Starting from one side, from the center moving downwards, slowly fold and make about 3 pleats. Repeat on the other side. Once dumpling is closed, firmly pinch the pleats once more. Set the dumpling on a flat surface and create a flat "seat" or surface (this is the side that will go on the pan). Place on corn starch-sprinkled plate or sheet pan and keep covered with a damp paper or kitchen towel. Repeat process until all filling and/or wrappers are used.
4. Prepare dipping sauce: In a small bowl, combine soy sauce, rice vinegar, la-yu, scallions, and toasted sesame seeds. Mix and set aside.
5. Prepare the slurry: In a measuring cup, combine 1 cup water and cornstarch. Mix until well-combined and no lumps remain. (You will use about 2 1/2 tablespoons of slurry per pan of dumplings; expect about 1/4 cup or less of leftover slurry at the end.)
6. Cook the dumplings: In a small nonstick pan (recommend an 8-inch pan with 6-inch cooking surface), add enough neutral oil to thinly coat the bottom (about 1 1/2 teaspoons), and heat over medium-high heat. Add dumplings in a sundial pattern (an 8-inch pan fits about 8 dumplings comfortably at a time) and cook until the dumpling bottoms turn a light golden brown, 2 to 3 minutes. The first batch will take closer to 3 minutes; subsequent batches will only need about 2 minutes.
7. Lower the heat to medium, re-mix the cornstarch slurry, then carefully pour about 2 to 2 1/2 tablespoons of the slurry mixture in and around the dumpling circle, making sure to cover the bottom of the pan. Immediately cover with a tight-fitting lid and cook until skins are translucent and cooked through, about 4 to 5 minutes. At any point, if the skirt is browning to quickly, lower the heat. Remove the lid and let any excess water evaporate. Use a finger to cover most of the top of the toasted sesame oil bottle, and (sparingly) drizzle toasted sesame oil around the perimeter of the pan. This will both add flavor and help ease the dumplings from the pan. Using a thin, flexible spatula, loosen the outer edges of the dumpling circle from the pan. The “wing/skirt” will start to lift off of the edge of the pan when crisp, another 1 to 2 minutes of cooking. Lightly shake the pan until the dumpling circle and “wing/skirt” loosen. Place a plate over the pan and carefully flip the dumplings onto the plate. Repeat with remaining dumplings.
8. Enjoy dumplings while hot. Serve with dipping sauce.