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Simple Suppers

Leek and Potato Soup for Two: Smooth or Chunky

The Quiet Bistro Page · Updated 2026-07-19 · 4 min read
Leek and Potato Soup for Two: Smooth or Chunky
The gistFor leek and potato soup for two, soften 150 g thoroughly washed sliced leek in 14 g butter with salt for 7 to 9 minutes without browning. Add 300 g evenly cubed potato and 500 ml unsalted stock or water. Simmer gently for 15 to 20 minutes, until a potato cube crushes easily. Mash partly for texture or blend safely off heat. Stir in optional 60 ml cream over low heat without a hard boil, adjust consistency by measured spoonfuls, and serve hot.
Contents

Simmer equal attention into leeks, potatoes, and liquid

Leek and potato soup for two uses 150 g sliced leek, 300 g potato, and 500 ml unsalted stock or water. Soften the leek in butter without browning, simmer the potatoes until easily crushed, then leave the soup chunky or blend it carefully. Finish with 60 ml cream only after lowering the heat. The recipe makes two main bowls, not a cauldron requiring municipal permits.

Ingredients

This makes about two main-course portions or three smaller cups, depending on evaporation and blending. Butter, cream, and prepared stock may contain allergens; verify labels and cross-contact.

Wash the leek after slicing

Trim off the root and tough dark-green portion, keeping the pale and tender light-green sections. Halve lengthwise, slice thinly, and place the pieces in a bowl of cold water. Agitate so sand falls away, lift the leek out, and repeat with clean water if grit remains.

Do not pour the dirty water through the leek in a strainer; that reunites the sand with its former address.

Browse simple suppers for more one-pot methods.

Cut the potatoes evenly

Peel and cut the potatoes into roughly 1/2-inch cubes. Similar size helps them soften together. Keep prepared potato from sitting exposed for a long period; proceed directly to cooking or hold appropriately for the recipe.

If using prepared stock, taste it before adding salt. Sodium varies widely, so this recipe begins with divided seasoning.

Sweat the leek gently

Melt the butter in a medium saucepan over medium-low heat. Add the drained leek and 1/4 teaspoon salt. Cook for 7 to 9 minutes, stirring, until soft and reduced in volume but not browned.

Lower the heat if edges color. Browning adds a different flavor and darker color; it is not wrong in every soup, but it changes this mild version.

Simmer until potatoes crush easily

Add the potatoes, 500 ml stock or water, pepper, and remaining 1/4 teaspoon salt. Bring just to a boil, then reduce to a steady gentle simmer. Partially cover and cook for 15 to 20 minutes, until a potato cube crushes easily against the side of the pot with a spoon.

The liquid should mostly cover the vegetables at the start. Pot shape, pan width, and heat affect evaporation. Add a small measured amount of hot water if the potatoes become exposed before tender.

Choose chunky, crushed, or smooth

For chunky soup, press some potato cubes against the pot and stir them back in. For a rustic texture, use a potato masher directly in the pan after removing it from the heat.

For smooth soup, let vigorous steaming subside and use an immersion blender according to its instructions, keeping the blade submerged and hands clear. If using a countertop blender, hot liquids can expand and force the lid upward; cool and process only as the blender manufacturer permits, in safe batches. Never fill beyond its hot-liquid limit.

Finish without boiling the cream

Return the soup to low heat. Stir in the optional 60 ml cream and warm gently without a hard boil. Taste and add salt or pepper only if needed.

If the soup is thicker than desired, add hot water or stock 1 tablespoon (15 ml) at a time. If too thin, simmer gently before adding cream, watching closely and stirring to prevent scorching.

Serve with the mustard lentil salad in smaller portions for a bistro-style meal.

Cool leftovers in a shallow container

Serve the soup hot in stable bowls. Refrigerate leftovers promptly in a clean shallow covered container and follow current official local food-safety guidance. Reheat only the needed portion until safely hot, stirring so there are no cool pockets.

Do not repeatedly cool and reheat the whole batch. Discard soup with an uncertain time or temperature history. A silky texture is lovely; an invented safety history is not an ingredient.

FAQ

Which part of a leek goes into soup?

Use the white and tender light-green portions for this mild soup, trimming away the root and tough dark-green top. Slice first, then wash in a bowl of cold water so grit can fall between the separated layers. Lift the clean leek out rather than pouring dirty water back through it. Save usable darker portions for another appropriate cooked stock preparation if desired.

How do I make leek and potato soup thicker?

Mash more of the tender potato into the liquid or simmer gently for a short time before adding cream. Potato starch thickens the soup without extra flour. Keep stirring to prevent scorching. Add no unmeasured raw starch directly to the finished pot, because it can clump and needs sufficient cooking. Remember that the soup also thickens somewhat as it cools.

Can I make potato leek soup without a blender?

Yes. Once the potato cubes crush easily, use a potato masher or press some against the side of the pan with a sturdy spoon. Stir the crushed potato back into the broth for a rustic body. Remove the pot from direct heat while mashing and keep it stable. The flavor does not depend on achieving a perfectly smooth texture.

Can leek and potato soup be frozen?

Freezing can change potato and dairy texture, sometimes making the thawed soup grainy or separated. If freezing fits current official local safety guidance, consider freezing before adding cream, use a suitable labeled container, and thaw and reheat safely. Blend or stir after reheating if texture separates. Discard any soup with an uncertain time or temperature history.