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Ruby and Grapefruit Meringue Tart

 The ruby chocolate gives the grapefruit and meringue tart and extra layer of decadence.

Equipment

  • Kitchen Torch
  • Pastry Bag and Piping Tip
  • Candy Thermometer
  • Small Saucepan
  • Electric Mixer
  • Shallow Container with Plastic Wrap
  • Fine Mesh Sieve
  • Whisk
  • Small Saucepan
  • Immersion Blender
  • Heat-Proof Bowl
  • Saucepan
  • Oven
  • Tart Mold
  • Parchment Paper
  • Rolling Pin
  • Mixing Bowls

Ingredients

Ruby Ganache

  • 12.3 oz heavy cream
  • 1.1 oz invert sugar
  • 0.7 oz glucose syrup
  • 8.8 oz Callebaut Ruby Chocolate - RB2 - 2.5kg Callets

Grapefruit Curd

  • 1.4 oz Grapefruit Puree #1
  • 0.2 oz Gelatin gold
  • 10.6 oz Grapefruit Puree #2
  • 0.4 oz Grapefruit Zest
  • 11.3 oz granulated sugar
  • 0.1 oz salt
  • 8.5 oz egg yolks
  • 6.7 oz butter

Italian Meringue

  • 1.4 oz Granulated Sugar #1
  • 11.3 oz Granulated Sugar #2
  • 5.3 oz water
  • 1.1 oz glucose syrup
  • 0.4 oz vanilla extract
  • 5.6 oz egg whites

Blonde Sable Dough

  • 8.8 oz butter
  • 9.9 oz granulated sugar
  • 0.1 oz salt
  • 3.5 oz eggs
  • 1.1 lb all-purpose flour

Instructions

Ruby Ganache

  • Warm the cream, invert sugar and glucose over medium heat until it reaches 85C.
  • Pour the warm liquid over the Ruby chocolate. Let sit for a minute to soften.
  • Emulsify with an immersion blender until smooth.
  • Slowly pour the ganache over the Blood Orange Curd in each tart shell until almost full.
  • Refrigerate the tarts until ready to finish.

Grapefruit Curd

  • In a small bowl, combine the grapefruit puree #1 and gold gelatin.
  • Let sit at room temperature until bloomed.
  • In a small sauce pan, combine the grapefruit puree #2, zest, sugar, salt and egg yolks. Whisk the mixture together immediately until smooth.
  • Cook the mixture over low heat until it just begins to thicken, 77-82C,
  • Remove the mixture from the heat immediately, add the bloomed gelatin and whisk to combine.
  • Add the butter and whisk until melted and completely smooth.
  • Strain the mixture through a fine-mesh sieve into a shallow container.
  • Cover the curd directly with plastic wrap. Refrigerate until it is fully chilled and set up.
  • Once the mixture is fully set, transfer to a pastry bag and fill each tart shell 2/3's full.
  • Smooth the top of the curd if needed.
  • Refrigerate until ready to finish the tarts.

Italian Meringue

  • Whip the egg whites on the lowest speed of mixer, until just foamy.
  • Slowly add sugar #1 to the mixer and continue to whip on low speed.
  • In a small sauce pan, combine the sugar #2, water and glucose.
  • Cook the sugar syrun to 115C.
  • Increase the speed of the mixer to medium, and slowly stread the hot sugar syrup into the bowl.
  • Add the vanilla extract.
  • Gradually increase the speed of the mixer to high speed. Whip the meringue until it is glossy, cool, and quadrupled in volume.
  • Use immediately or store in the freezer until ready to use.
  • When the Ruby Ganache is set on the tarts and ready to decorate:
  • Transfer the Italian Merignue to a pastry bag fitted with a rose petal pastry tip.
  • Pipe decoration over the top of the tart, as desired.
  • Lightly torch the merigue, if desired.
  • Garnish with fresh grapefruit segments, if desired.
  • Store in refrigerator until ready to serve.

Blonde Sable Dough

  • In the bowl of a stand mixer, fitted with the paddle attachment, cream the butter, sugar, and salt until fully combined.
  • Add the eggs and mix until fully incorporated.
  • Add the flour and mix until just combined.
  • Roll the soft dough between parchment paper until 4mm thick.
  • Freeze until ready to use.
  • Line 65mm round tart shells and freeze until solid.
  • Bake at 160C, directly from the freezer, until golden brown, about 20 minutes.
  • Let cool to room temperature before filling.