Authentic Belgian Stoemp aux carottes et poireaux: floury Bintje potatoes mashed with butter-braised sweet carrots and fragrant leeks, seasoned with nutmeg and sea salt flakes.
Melt half the butter in a saucepan. Add the carrots and leeks with a splash of water, cover, and braise for 10 minutes until tender.
Boil the potatoes in salted water for 18 minutes until tender; drain completely and steam-dry.
Add the braised carrots and leeks, warm milk, and remaining butter to the potatoes. Crush with a potato masher into a textured, rustic orange-and-green mash.
Season with freshly grated nutmeg, sea salt flakes, and white pepper, serving steaming hot with roasted vegetarian gravy.