Place the potatoes in a large pot and cover with cold salted water. The water should be salty like the sea.
On high heat, bring the potatoes to a boil then reduce the heat to a low simmer. Cook the potatoes until tender.
Heat a small pan over low to warm the plant milk.
Drain the potatoes. While still hot, pass all of the potatoes through a ricer into a large bowl.
Add the garlic confit, garlic oil, nutritional yeast and ½ of the plant milk. Using a potato masher, combine. Continue to add the milk until creamy and smooth. Add salt to taste.