Sea Urchin Mousse with Ginger Vinaigrette

A luxurious appetizer featuring delicate sea urchin roe transformed into a silky mousse, complemented by a bright ginger-lemon vinaigrette. This elegant dish combines the oceanic richness of uni with subtle heat from cayenne and fresh ginger.

6 servings
1 hr 30 min

Ingredients

  • ½ teaspoon unflavored gelatin
  • ½ cup vegetable broth
  • 1 tray uni
  • 1 large egg yolk
  • ¼ teaspoon salt
  • ½ teaspoon lemon juice
  • pinch cayenne
  • cup heavy cream
  • 2 teaspoons fresh ginger
  • 2 teaspoons lemon juice
  • teaspoon salt
  • 3 tablespoons extra-virgin olive oil
  • 1 serving garnish
  • 1 piece instant-read thermometer

Cooking Instructions

  1. 1.

    Sprinkle gelatin over broth in a small saucepan and let stand 1 minute to soften, then cook over moderate heat, stirring, until dissolved, 1 to 2 minutes.

    2 min

  2. 2.

    Force uni through a fine-mesh sieve into a bowl, scraping bottom of sieve occasionally.

    5 min

  3. 3.

    Whisk in yolk, salt, lemon juice, and cayenne, then add broth mixture, whisking. Return to saucepan and cook over moderately low heat, stirring constantly, until it registers 170°F on thermometer, 2 to 3 minutes. (Do not let simmer or egg will curdle.) Transfer mixture to a bowl set in a larger bowl of ice and cold water. Let stand, stirring occasionally, until mixture is cold and the consistency of raw egg whites, about 10 minutes.

    13 min

  4. 4.

    Beat cream with an electric mixer until it just holds soft peaks, then fold cream into uni mixture gently but thoroughly. Chill, covered, until set, about 1 hour.

    60 min

  5. 5.

    Press hard on ginger in a small fine-mesh sieve set over a small bowl to extract 1 teaspoon juice (discard solids), then whisk in lemon juice and salt. Add oil in a slow stream, whisking until emulsified.

    5 min

  6. 6.

    Spoon 1/4 cup mousse onto each of 6 plates, then drizzle with some vinaigrette.

    5 min