This recipe adapted from @ddupagne . . .
Ingredients:
225g + 2Tbsp salted butter (room temp)
1 medium shallot sliced
1.5Tbsp tarragon
1/2 bunch parsley
1/2 bunch basil
1Tbsp Dijon
1 egg yolk
2tsp Worcestershire
1tsp grated nutmeg
5 walnuts
9 brown anchovies
15 capers
Juice 1/2 a lemon
1tsp ground white pepper
Salt to taste
Instructions:
• Sweat shallot in 2Tbsp butter until translucent and lightly browned
• Add shallot, remaining butter, herbs, capers, anchovies, walnuts, pepper and nutmeg to a food processor.
Blitz until almost completely smooth
• Whisk egg yolk with lemon juice, Worcestershire and Dijon.
• Add puree’d mix to egg mix and whisk well
• Add 2/3 of the sauce to a pan. Cook over low heat for 4 minutes stirring constantly until slightly thickened
• Add hot sauce to remaining 3rd. Whisk well.
Season to taste. Serve warm.