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German Potato Leek Soup (Kartoffelsuppe)

Yields4 ServingsPrep Time15 minsCook Time35 minsTotal Time50 mins

Kartoffelsuppe is a classic German soup made with potatoes, leeks, and vegetables, often blended into a smooth base or left chunky depending on regional preference. It’s traditionally finished with a swirl of cream and sometimes served with crispy bacon, smoked sausage, or crusty rye bread. Mild in flavor but deeply satisfying.

German Potato Leek Soup (Kartoffelsuppe)

 2 tbsp unsalted butter (or oil)
 1 large leek, white and light green parts only, cleaned and thinly sliced
 1 small yellow onion, diced
 2 medium carrots, peeled and diced
 2 stalks celery, diced
 3 medium Yukon gold or russet potatoes, peeled and cubed (~1.5 lb)
 4 cups vegetable or chicken broth
 1 tsp salt, or to taste
 ½ tsp freshly ground black pepper
 ¼ tsp ground nutmeg (optional but traditional)
 ½ cup heavy cream or milk (optional, for creaminess)
 Fresh parsley or chives, chopped, for garnish
Optional Add-Ins
 ½ tsp marjoram or thyme (common in Bavarian-style soup)
 1 smoked sausage or frankfurter, sliced and added before serving
 Crumbled bacon or crispy shallots on top
Prep the Leeks Properly
1

  • Slice the leeks in half lengthwise and rinse thoroughly between layers to remove grit. Slice thinly.

Sauté the Base
2

  1. In a large soup pot, melt butter over medium heat.

  2. Add the leeks, onion, carrots, and celery.

  3. Sauté gently for 6–8 minutes until softened but not browned.

Simmer the Potatoes
3

  1. Add the cubed potatoes, broth, salt, pepper, and optional nutmeg or marjoram.

  2. Bring to a boil, then reduce to a simmer. Cover and cook for 20–25 minutes, or until potatoes are fork-tender.

Blend (Optional)
4

  1. For a rustic chunky texture, lightly mash some of the potatoes with a spoon.

  2. For a smoother version, use an immersion blender to purée part or all of the soup.

  3. Stir in cream or milk if using, and adjust seasoning to taste.

Add Sausage (Optional)
5

  • If using sausage, add it during the last 5 minutes to heat through. For extra flavor, sauté slices first in a pan.

Tips for Success
6

  • Don’t skip washing the leeks thoroughly—they trap dirt!

  • Yukon Gold potatoes create a creamier texture; russets make it fluffier.

  • If blending, remove a bit of the soup first and stir it back in for texture.

Variations
7

  • Vegan version: Use olive oil and skip cream or use plant-based milk.

  • With bacon: Crisp bacon before starting and cook veggies in the fat.

  • With apples: Add ½ diced apple for a sweet-savory twist (common in southern Germany).

Suggested Pairings
8

  • Serve with: Pretzel rolls, rye bread, or warm mustard-spread toast

  • Drink: Dunkelweizen beer, Riesling, or hot apple cider

  • Occasion: Oktoberfest, hearty lunch, family dinner

Nutrition Facts

4 servings

Serving size