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Author Notes: I had a hard time coming up with a name for this soup. It's like no potato soup I've made before — deep, rich, earthy. Creamy and savory. It's the potato version of a particularly wonderful mushroom bisque. Plain old "Potato and Leek Soup" just wasn't going to cut it. The title I chose is long and wordy, but it felt wrong to leave out any of the details ("Leek" and "Caramelized Leek" are two different beasts, you know).
So it all started with the humble potato. Have you ever noticed that the more you cook a potato, the better it gets?
Raw potato. Ick.
Baked potato. Better. Needs stuff on it, in it, all over it. Butter, salt, sour cream, bacon. Stuff.
Hash browns. Pretty good. Better with ketchup. (Don't judge me.)
French fries. Now you're talkin'.
Potato chips. Food of the gods.
Regular potato and leek soup is made by boiling the potatoes, separately in water or in right in the soup stock. It works; it makes a nice soup, comforting and familiar. But I had a beautiful batch of local fingerlings and, on a whim, decided to pan-fry them, whole, slowly, in a shallow butter bath until deep and golden. Meanwhile, in a pot on the next burner, leeks freshly pulled from my winter garden simmered in their own butter bath, steamy and aromatic.
It's moments like this when it's bliss to be a home cook. —SoupAddict
- 5 tablespoons extra virgin olive oil, divided usage
- 3 tablespoons butter, divided usage
- 1 pound fingerling potatoes, scrubbed and patted dry
- 1 large leek, white and light green parts only, sliced into rings
- 1/2 cup white wine
- 1 small onion, diced
- 2 tablespoons finely milled flour (instant flour)
- 3 strips uncooked bacon, cut into small pieces
- 3 cups vegetable stock
- 1 cup half and half (full or reduced fat)
- 1 splash sherry
- 1 splash fish sauce
- 1/2 cup Gruyere cheese, grated
- 1 tablespoon flat-leaf parsley, minced
- 1st round potato pan-fry: heat 3 tablespoons oil olive and 2 tablespoons butter over medium in a large, heavy metal skillet, until the oil shimmers. Add the potatoes in a single layer and turn to coat well. Cover and cook for 25 to 30 minutes, turning occasionally so that all sides brown. Remove potatoes to a plate to cool slightly.
- Meanwhile, caramelize the leeks: heat 2 tablespoons olive oil and 1 tablespoon butter on medium in a 4 or 5 qt stock pot or dutch oven, until the oil shimmers. Add the leeks and stir to coat well. Spread them out in the bottom of the pan so they have good surface contact. Turn heat to medium-low and allow to cook until a deep golden brown (15 – 30 minutes, depending on the type of pot you use). Keep an eye on the leeks, and stir occasionally to ensure they brown evenly.
- Deglaze the leeks with the wine and continue cooking until the liquid evaporates. Add the onion and bacon pieces and cook until the bacon is slightly crispy (about 8 minutes). Sprinkle the flour over the vegetables and stir well to coat.
- Add the vegetable stock to the leek mixture and bring to a boil, then reduce to medium-low and simmer while you continue with the potatoes.
- 2nd round potato pan-fry: drain all but 1 tablespoon of oil from the large skillet. Turn heat to medium, reheating oil until it shimmers. Slice the potatoes into 1/4? disks and return them to the pan, stirring well to coat in the oil. Sauté for about 10 minutes, flipping potatoes halfway through — some potato pieces will be slightly crispy; some tender and crumbly.
- Use an immersion blender to smooth out the soup a bit (it's okay if the bacon gets chopped up; it's there for flavor, not texture). Stir in the half-and-half, sherry and fish sauce (if using). Reduce heat to low.
- Add potatoes to soup, incorporating gently. Taste, and season with salt and pepper to suit. Before serving, stir in the cheese and ladle into bowls. Top with the parsley.
- This recipe was entered in the contest for Your Best Spring Alliums