How to Make It
Mix turkey, scallions, garlic, tamari, sesame oil, rice vinegar, ginger, and red pepper flakes in a large bowl until combined. Cover the wonton wrappers with a lightly damp towel (this will keep them from drying out). Moisten the edges of the first wrapper with water, place a scant tablespoon of turkey filling in the center, fold into a triangle, and bring two corners together. Pinch to seal. Repeat with remaining wrappers and mixture, covering the completed dumplings with a damp towel as you work to keep them from drying out.
Bring a large saucepan of salted water to a boil. Lower heat to a rolling simmer and, working in two batches, carefully lower dumplings into the water. Cook until each dumpling floats to the surface, about 2 minutes. Remove with a slotted spoon; tap on paper towel to drain excess water.
Make the sauce: Whisk together the tamari, scallion, vinegar, honey, and ginger in a small bowl. Serve with the dumplings.