Summary

Ingredients

• 1 onion (s), finely diced
• 20 g butter
• 20 g flour
• 350 ml milk
• 3 tablespoon mustard, coarse (rotisseur)
• 1 tablespoon chervil, chopped
• 4 egg (s), hard-boiled
• salt and pepper

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Instructions

1. Hard boil eggs. Steam the onion cubes in the melted butter until translucent. Dust with flour, sweat briefly and deglaze with the cold milk. Simmer over a low heat for about 10 minutes. Stir in mustard, chervil and season with salt and pepper. Add the peeled eggs and heat them up in the sauce.
2. In addition: boiled potatoes or mashed potatoes.