Starchy potatoes give this soup its body without any cream, so the variety matters. The move that keeps it clean-tasting: sweat the leeks gently in butter without letting them brown, so the soup stays pale, sweet, and delicate.
By Vince Gonzalez · Published July 2026 · Sourcing verified 5 Jul 2026
Prep15 min
Cook40 min
Makes6 servings
CuisineFrench
Cost$$
Gluten-free
Contains dairy
The Ingredients — and where to get them
Cook for6servings
Russet potatoes
Starchy potatoes break down and thicken the soup as they cook.
Can you make Potato Leek Soup in an air fryer? — Yes, with an insert
Not on its own — an air fryer can’t hold a pool of liquid. You can simmer it in an oven-safe dish or a silicone insert made to fit the basket, but the broth won’t reduce or brown the way it does on the stove, and that insert comes out scorching, so use oven mitts. For real depth, a pot on the stove wins.
Can you freeze Potato Leek Soup? — Yes
Yes — it freezes well. Cool it fully, portion into airtight containers, and it keeps a few months; thaw in the fridge and reheat gently.
Can you make Potato Leek Soup ahead of time? — Yes
Yes — it holds well and often tastes better the next day. Make it ahead and reheat gently before serving.
Is Potato Leek Soup gluten-free? — Yes
Yes — nothing in this recipe as written contains gluten. As always, glance at the labels on any packaged items (broth, sauces, chocolate), since brands vary.
Is Potato Leek Soup vegan? — No
No — it contains meat, so it isn’t vegetarian or vegan.
Community Notes
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