Bring a large pot of water to a boil.

Wash, peel, and cut the potatoes into chunks.

Add the potatoes to the boiling water.

Cook until the potatoes can be easily pierced with a fork (about 15 minutes).

While the potatoes are cooking, chop the chives or scallions if using.

Drain the water from the pot.

Return the potatoes to the pot.

Add the stock or broth, dairy-free milk, garlic powder, and sea salt a little at a time.

Mash the potatoes while combining them with the liquids and seasonings.

Add more sea salt if desired.

Transfer the mashed potatoes to a serving bowl.

Garnish with chopped chives or scallions, if using.