Pre soak shiitake mushrooms in hot water until soft, 5-10mins and dice finely.
Dice pork and prawns, slice spring onions.
Mix the pork and prawns, salt, pepper in a bowl, then add the rice wine and soy sauce, chicken powder, sugar and spring onions
Set aside.
Cup the wrapper in your hand and fill - keep compressing with a spoon or butter knife. Then seal by pinching the money bag together. The should be full but not overflowing.