Gromperenzopp (Luxembourgish Potato Soup)
A comforting and creamy potato soup, Gromperenzopp is a staple in Luxembourgish cuisine. This hearty soup features tender potatoes and leeks, enriched with smoked bacon and a touch of cream, making it a perfect dish for a chilly day.

🧂 Ingredients
- 500 g Potatoes(peeled and cubed)
- 2 medium Leeks(trimmed, washed, and thinly sliced)
- 1 large Onion(finely chopped)
- 150 g Smoked bacon(diced)
- 30 g Unsalted butter
- 1 liter Chicken or vegetable stock
- 100 ml Heavy cream
- 10 g Fresh parsley(chopped, for garnish)
- 1 tsp Salt
- 0.5 tsp Black pepper
- 0.25 tsp Nutmeg(freshly grated)
👨🍳 Instructions
- 1
Peel the potatoes and cut them into small cubes. Set aside.
💡 Tip: Uniformly sized cubes ensure even cooking. - 2
Trim and wash the leeks thoroughly to remove any dirt. Slice them thinly.
💡 Tip: Ensure all grit is removed from the leeks. - 3
Peel and finely chop the onion.
- 4
Dice the smoked bacon into small pieces.
- 5
In a large pot, melt the butter over medium heat. Add the smoked bacon and cook until it begins to crisp, stirring occasionally.
💡 Tip: Render the bacon fat for added flavor. - 6
Add the chopped onion and sliced leeks to the pot. Cook until softened and translucent.
💡 Tip: Sweating the aromatics releases their full flavor. - 7
Add the cubed potatoes to the pot and stir to combine with the bacon, leeks, and onions.
- 8
Pour in the chicken or vegetable stock and bring the mixture to a boil.
💡 Tip: Using good quality stock enhances the soup's depth. - 9
Reduce the heat to low, cover the pot, and simmer until the potatoes are tender.
💡 Tip: Test potato tenderness with a fork. - 10
Using an immersion blender, puree the soup until smooth. Alternatively, transfer the soup in batches to a blender and return it to the pot.
💡 Tip: Be careful when blending hot liquids. - 11
Stir in the heavy cream, salt, black pepper, and nutmeg. Simmer for an additional 5 minutes, but do not let it boil.
💡 Tip: Gentle simmering prevents the cream from curdling. - 12
Serve hot, garnished with fresh parsley.
💡 Tip: A sprinkle of fresh herbs adds brightness.
💡 Pro Tips
- ✓For a richer flavor, use a good quality smoked bacon.
- ✓If you prefer a chunkier soup, reserve some cooked potato cubes before blending.
- ✓Serve with crusty bread for dipping.
🔄 Variations
- Add a bay leaf during simmering for extra aroma.
- For a dairy-free version, omit the cream and use a plant-based milk alternative.