Last time I went to David & Camy’s in Box Hill, I bought some frozen standard pork dumplings. They were a bargain at 15 for $6.50. Actually I suspect they give you 16 because both bags had 16 in them.
First things first, never ever try to defrost them. I made that mistake once and it ended up being really horrible because they just turned into mushy, wet things and they couldn’t be cooked and had to be tossed out.
Basically, you just need to boil up a large pot of water and toss the frozen dumplings in. They will sink so you will need to keep stirring them for the first 5 minutes or so. You can tell they are cooked when they start to float. If you want them fried, you can then just fry them in a bit of oil. I also use the pre-made dumpling sauce I got from an Asian grocer, which is really rather good so I never tried making my own.