Stew the apples by peeling, coring and chopping and cook with the sugar and a dribble of water until they are soft and mushy. I usually do this in the microwave. Allow to cool.
Stuff each wrapper with a teaspoon of apple and a couple of blueberries, wet the edge of the pastry and fold over and crimp and pleat to close (video here). I have a gyoza press (photos wtih a different filling) that I bought very very cheaply at the Japan Centre. Put the stuffed gyoza on a board, pressing down lightly to give it a base so it sits upright.
To cook the gyoza fry them in oil (light olive or sunflower) until they are browned on the base and both sides (I find it easier to work with 2 smaller frying pans), stand them up in the frying pan turn the heat right up and carefully pour about 1/3 mug of water over them. The water will furiously bubble and turn to steam, when the water has all evaporated the wrappers will start to look translucent. Take off the heat and serve immediately.
Hot Peanut Butter Sauce
Gently heat stirring all the time until the marge/butter is melted and the sugar is dissolved. Serve warm.
Spare uncooked gyoza can be frozen.
• Please note that the nutrition information provided below is approximate and meant as a guideline only.
• Unless stated otherwise cup conversions have been made with an online tool. For accuracy please check with your favoured conversion tool. We recommend buying inexpensive digital kitchen scales.