Ingredients

  • 6 leaves spinach
  • Leaves from 1/2 bunch watercress (1 1/2 cups of leaves)
  • 2 tablespoons fresh flat parsley leaves
  • 2 tablespoons fresh chervil leaves
  • 2 tablespoons chopped fresh chives
  • 1 tablespoon fresh tarragon leaves
  • 2 shallots, chopped
  • 2 cornichons, rinsed and chopped
  • 4 anchovy fillets
  • 2 tablespoons capers
  • 1 garlic clove, peeled
  • ¼ teaspoon cayenne pepper
  • 3 hard-cooked egg yolks
  • 2 large raw egg yolks
  • ¼ pound unsalted butter, at room temperature, cut into 1-tablespoon pieces
  • ½ cup extra-virgin olive oil
  • 1 teaspoon white-wine vinegar
  • Salt and freshly ground white pepper
  • Nutritional Information
    • Nutritional analysis per serving (4 servings)

      526 calories; 54 grams fat; 19 grams saturated fat; 0 grams trans fat; 27 grams monounsaturated fat; 4 grams polyunsaturated fat; 7 grams carbohydrates; 1 gram dietary fiber; 2 grams sugars; 5 grams protein; 202 milligrams cholesterol; 282 milligrams sodium

    • Note: Nutrient information is not available for all ingredients. Amount is based on available data.

1 1/2 to 2 cups

Preparation

  1. Blanch the spinach, watercress, herbs and shallots in boiling water for 1 minute. Drain, refresh under cold water and squeeze dry. Place the mixture in a food processor. Add the cornichons, anchovies, capers, garlic, cayenne and salt and pepper. Process to a smooth paste. Add the egg yolks, cooked and raw, and the butter and process again until thoroughly mixed.
  2. If the butter is still a little chunky (the sauce should be glossy and smooth as velvet), transfer the mixture to a blender and beat in the oil in a thin steady stream while the blender is running. If the mixture is perfectly smooth in the food processor, transfer the butter to a bowl and whisk in the oil by hand. Beat in the vinegar and adjust salt and pepper to taste.

15 minutes

Dining and Cooking