📖 Instructions

1. First things first, let's get those leeks clean! Leeks tend to hide a lot of grit and dirt between their layers. Trim off the dark green tops and the root end. Slice the white and light green parts lengthwise, then thinly slice them into half-moons. Place the sliced leeks in a bowl of cold water, swish them around with your hands to dislodge any dirt, and then lift them out, letting the dirt settle at the bottom. Drain them well.
2. Next, prep your potatoes. Peel the potatoes and cut them into roughly 1-inch cubes. Try to keep them uniform in size so they cook evenly. Set them aside in a bowl of cold water to prevent browning while you work on the leeks.
3. In a large, heavy-bottomed pot or Dutch oven, melt the butter over medium heat. Once the butter is shimmering, add the cleaned and drained leeks. Cook them gently, stirring occasionally, until they become very soft and translucent, about 8-10 minutes. You don't want them to brown, just to soften and release their sweet aroma. This is a crucial step for that buttery leek sweetness!
4. Now, stir in the minced garlic and cook for another minute until fragrant. Don't let the garlic burn; it can turn bitter quickly. Then, sprinkle in the flour and cook for 1-2 minutes, stirring constantly. This creates a roux, which will help thicken our soup beautifully.
5. Drain the cubed potatoes and add them to the pot with the leek mixture. Pour in the vegetable broth and season with a teaspoon of salt and a half teaspoon of black pepper. Bring the mixture to a boil, then reduce the heat to low, cover the pot, and let it simmer for about 15-20 minutes, or until the potatoes are fork-tender. Make sure to not overcook your potatoes, or they'll become mushy before blending.
6. Once the potatoes are tender, carefully remove the pot from the heat. Now, for the creamy goodness! You have a couple of options here. You can use an immersion blender directly in the pot to blend the soup until it's smooth and creamy. Or, if you don't have one, carefully transfer the soup in batches to a regular blender. If using a regular blender, remember to vent the lid and cover it with a kitchen towel to prevent steam buildup and ensure safety. Blend until smooth.
7. Return the blended soup to the pot (if you used a regular blender) and place it back over low heat. Stir in the heavy cream and fresh thyme leaves. Heat through gently, but do not bring it to a rolling boil after adding the cream, as it might curdle.
8. Taste the soup and adjust the seasonings as needed. You might want a little more salt, pepper, or maybe a dash of a secret ingredient like a pinch of nutmeg to really bring out the flavors. Serve hot, garnished with a sprinkle of fresh chopped chives or parsley, and perhaps a drizzle of good olive oil. Enjoy your comforting bowl of deliciousness!