Harengs Lucas (Smoked Herring in Mustard Mayonnaise)

Ingredients

• smoked herrings
• milk
• hard-boiled egg yolks
• mustard
• oil
• vinegar
• shallots
• chervil
• gherkins

Instructions

1. Soak the smoked herrings in tepid water, skin them, and marinate them in milk.
2. Divide the fillets into strips.
3. Make the sauce with hard-boiled egg yolks, mustard, oil, vinegar, and the chopped shallots, chervil and gherkins, mounting it like a mayonnaise.
4. Keep the sauce quite well seasoned.
5. Mix the strips of herring into the sauce.