Boil the Potatoes: Add your whole, unpeeled potatoes to a large pot with 1 tablespoon of kosher salt. Cover them completely with cold water. Bring to a boil over high heat, then reduce to medium and simmer for about 25 minutes until tender.
Cool and Peel: Drain the water and let the potatoes sit for about 10 minutes. Once they are safe to handle, carefully slip the skins off. Boiling them whole locks in the starch for a fluffier texture!
Mash and Flavor: Place the potatoes back in the warm pot. Add the vegan butter, sea salt, and the cloves from your roasted garlic bulb. Use a potato masher or whisk to combine. Slowly pour in the soy milk while mashing until you reach your desired creaminess.
Season and Serve: Taste before adding more salt (especially if your vegan butter is salted!). Garnish with fresh parsley and black pepper, and serve while piping hot.