Soak sweet potato vermicelli in hot water for 20 minutes. Drain and rinse. Cut into small pieces and add to a large bowl.
Add cabbage, scallions, carrots, mushroom, Thai chilis, and raw ground chicken to large bowl. Mix ingredients to combine.
In a separate small bowl, combine 2 ½ tablespoons of soy sauce with oyster sauce, sesame oil, minced garlic, mirin, brown sugar, white miso, and black pepper, and mix well. Add to the chicken and veggie mix and stir until well combined.
To assemble potstickers, prepare a small bowl of water. Place a wonton wrapper on the palm of your non-dominant hand. Make sure to keep the remaining wonton wrappers covered with a damp towel while assembling to prevent from drying out.
Spoon 1 teaspoon of chicken and veggie filling into the center of wrapper. Dip your finger into the water and rub onto half of the wrapper. Fold wrapper in half and seal just the top closed.
Working downward from the top, use your index finger to create three small pleats to one side of the wrapper. Press and seal each pleat firmly closed. Repeat on other side of wrapper until you have six pleats total.
If the wrapper is not sealing closed, rub more water onto the edge of the wrapper. Place on a tray and repeat until all filling has been used. Cover filled wrappers with a damp towel or plastic wrap while working.
To cook, heat 2 tablespoons of oil in a large non-stick skillet with lid over medium/high heat. Add approximately 12 potstickers in a single layer to the skillet. The oil should not be too hot.
Cook for 5-8 minutes until the bottoms have browned. Carefully pour ¼ cup of water in the skillet and cover with lid. Lower the heat to medium.
Cook until water has evaporated and potstickers are cooked through, approximately 10-15 minutes. If water has evaporated and potstickers are not fully cooked, add 1-2 more tablespoons of water at a time until cooked through.
While potstickers cook, make dipping sauce by combining 1 tablespoon of soy sauce with white vinegar, ginger, and sesame seeds.
Serve hot with dipping sauce.
