For the Soup:

4 large leeks (white and light green parts only, about 2½ pounds)

3 tablespoons unsalted butter (or vegan butter)

1 teaspoon sea salt

Freshly ground black pepper, to taste

2 pounds Yukon Gold or yellow potatoes, chopped

3 garlic cloves, grated

6 cups leek top broth (recipe below) or vegetable broth

3 sprigs fresh thyme, bundled

1 cup milk or heavy cream (or non-dairy alternative)

1 tablespoon fresh lemon juice (optional)

Chopped fresh chives, for garnish

Optional Leek Top Broth:

4 large leeks, dark green tops only (about 2½ pounds)

12 cups water

8 fresh thyme sprigs

5 garlic cloves, smashed

1 tablespoon sea salt

1 tablespoon black peppercorns

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1. Optional: Make the Leek Top Broth

In a large pot, combine the dark green leek tops, water, thyme, smashed garlic, salt, and peppercorns.
Bring to a boil, then reduce heat to simmer for 30 minutes.
Strain the broth and measure 6 cups for the soup. Store any extra in the fridge or freezer.

2. Prepare the Soup

Clean the white and light green parts of the leeks thoroughly. Slice lengthwise and rinse under cold water.
Melt butter in a large pot over medium heat. Add leeks, salt, and pepper. Cook 8–10 minutes until soft, stirring occasionally. Reduce heat if leeks start browning.
Add potatoes, garlic, broth, and thyme. Simmer for 20 minutes, or until potatoes are tender.
Remove thyme sprigs. Blend the soup using an immersion blender or in batches with a countertop blender until smooth.
Stir in milk or cream, and lemon juice if desired. Adjust seasoning with salt and pepper.

3. Serve

Ladle into bowls.
Garnish with chopped chives, a drizzle of olive oil, and freshly ground black pepper.
Serve with crusty bread, a salad, or a sandwich for a complete meal.

Yukon Gold potatoes are preferred for a creamier texture, but yellow potatoes will work too.
The optional leek top broth enhances the flavor but isn’t necessary if you’re short on time.
For a vegan version, substitute butter with vegan butter and milk or cream with a plant-based milk like oat or cashew.
Lemon juice is optional but brightens the flavors beautifully.
Serve with toppings such as crispy bacon, croutons, or additional herbs for extra flair.