Cover mushrooms in boiling water and set aside to re hydrate for 15 mins. Squeeze out water, cut each into four and add to Thermomix bowl.
Place spring onions, ginger, garlic, chilli and coriander root into Thermomix bowl with the mushrooms and chop 5 seconds/speed 8. Repeat if needed, you are looking for finely chopped ingredients.
Add remaining ingredients and mix 10 secs/speed 8. Transfer to another bowl.
Place heaped teaspoons of the mix in the center of a gow gee wrapper. Run a wet finder around the edge and fold together and seal, making sure there are no air pockets.
Heat a large fry pan. Add 2 tbsp vegetable oil. Add potstickers and brown their bottoms, (this will take a few minutes, keep an eye on them!), you don't want to burn them!
Add 1 cup water, and cover pan with a lid. Steam for approx 7 mins then remove the lid and let any residue water evaporate. Cook for a minute longer to re crisp up the bottoms
Serve bottom side up with a dipping sauce (see notes below)
Notes
For dipping sauce mix together:1 tsp chilli oil, 2 tsp sesame oil, 2 tbsp rice wine vinegar, 3 tbsp light soy sauce, 1 tsp brown sugar.Add some thinly sliced chilli and chopped fresh coriander.This sauce will last approx 4 days in the fridge and is perfect for dipping!