Mix chopped onion, chopped leak and starch.
Add all the ingredients (*), add your preferred meat and knead well with hands.
This finger shape is important when wrapping the dumplings. You can support the bottom of the dumplings with your middle finger. Place a dumpling wrap into your hand, fill it with meat by using a spoon.
Make some whole in a parchment paper(baking paper), place the dumplings into a steamer. Cover with a lid and steam them for 15 mins with middle heat.
When they are well cooked, enjoy with dipping into soy sauce! (You can also mix soy sauce with "Karashi" which is a Japanese mustard.)
