Most spice mixes are vegan. Here, I use a spice mix that's called "seafood seasoning". I use it veganizing dishes that usually come with shrimp, fish, mussels, etc. Alternatively, you can also use seaweed powder.
You can make a whole bunch of dumplings and freeze them for later during times you don't have much time to cook. Just make a quick broth, like in the recipe, and add these dumplings and you'll have a dish in less than 20 minutes. Very pancit!