Lemon Meringue Éclairs

Lemon Meringue Eclairs

Filled with smooth and silky Lemon Curd and topped with fluffy Swiss Meringue, these delicately delicious éclairs are the ultimate refined, showstopping bake. Each bite is a balanced marriage of crisp and light choux pastry, creamy lemon filling, and lightly caramelized meringue.

Lemon Meringue Éclairs
 
Makes about 20 éclairs
Ingredients
  • ½ cup (120 grams) unsalted butter, cubed and room temperature
  • ½ cup (120 grams) water
  • ½ cup (120 grams) whole milk
  • 2 teaspoons (8 grams) granulated sugar
  • ½ teaspoon (1.5 grams) kosher salt
  • 1¼ cups (156 grams) all-purpose flour
  • 5 large eggs (250 grams)
  • Lemon Curd (recipe follows)
  • Swiss Meringue (recipe follows)
Instructions
  1. Preheat oven to 375°F (190°C). Using a permanent marker, draw 3 lines each lengthwise 4 inches apart on 2 sheets of parchment paper (6 lines total). Turn over, and place on 2 rimmed baking sheets.
  2. In a medium saucepan, bring butter, ½ cup (120 grams) water, milk, sugar, and salt to a rolling boil over medium-high heat. Using a wooden spoon, stir in flour. Cook, stirring constantly, until a skin forms on bottom of pan and mixture pulls away from sides of pan and forms a ball, about 1 minute. Transfer mixture to the bowl of a stand mixer fitted with the paddle attachment. Beat at low speed until dough cools slightly, about 30 seconds. Add eggs, one at a time, beating until combined after each addition. (Batter should be shiny and slowly move back together when a spatula is dragged through it; dough should also fall off mixer paddle so excess is left hanging in a “V” shape.)
  3. Transfer batter to a large pastry bag fitted with a ½-inch round piping tip (Ateco #807). Place one long side of a prepared pan closest to you. Holding pastry bag at a 45-degree angle, slowly pipe batter in straight lines from top drawn line to center drawn line, spacing piped lines 1 inch apart. (Éclairs should be 1 inch wide.) Use a wet finger to smooth ends, if necessary. Starting from spaces left in first row of éclairs, repeat process, piping from center drawn line to bottom drawn line. Repeat procedure, piping between lines on remaining prepared pan. Let stand at room temperature until ready to bake.
  4. Bake, one batch at a time, for 10 minutes. Rotate pan, and bake until fully puffed and deep golden brown, about 15 minutes more. (If not fully baked, they will deflate as they cool.) Let cool completely on pans.
  5. Using a ¼-inch round piping tip (Ateco #802), poke a hole in center of top of each éclair. Insert a wooden skewer into hole, and move it around each side to ensure curd will fill entire éclair.
  6. Place Lemon Curd in a pastry bag fitted with a ¼-inch round piping tip (Ateco #802). Place piping tip in hole, and apply gentle pressure to begin filling one side of an éclair; pipe into other side of éclair until it feels heavy. Repeat with remaining Lemon Curd and remaining éclairs. (Each éclair will have about 35 grams of Lemon Curd.)
  7. Spoon Swiss Meringue into a pastry bag fitted with a ½-inch French star piping tip (Ateco #864). Pipe swirls onto éclairs. Using a handheld kitchen torch, carefully brown meringue. Best served same day.

Lemon Curd
 
Makes 2⅔ cups
Ingredients
  • 1½ tablespoons (12 grams) tightly packed lemon zest
  • 1¼ cups (300 grams) fresh lemon juice
  • 1 cup (200 grams) granulated sugar, divided
  • ½ teaspoon (1.5 grams) kosher salt
  • 4 large eggs (200 grams), room temperature
  • 2 large egg yolks (37 grams), room temperature
  • 1 tablespoon (8 grams) cornstarch
  • ¾ cup (170 grams) unsalted butter, cubed
Instructions
  1. In a large saucepan, stir together lemon zest and juice, ½ cup (100 grams) sugar, and salt. Heat over medium heat until just steaming. (Do not boil.)
  2. In a large bowl, whisk together eggs, egg yolks, cornstarch, and remaining ½ cup (100 grams) sugar. Gradually add warm lemon mixture to egg yolk mixture, whisking constantly. Return mixture to saucepan, and cook over medium heat, stirring constantly in a figure eight motion with a spatula, until thickened and mixture starts to boil. Cook for 1 minute. Strain through a fine-mesh sieve into a medium bowl. Discard solids. Add butter, 1 cube at a time, stirring until combined after each addition and mixture is smooth. Cover with a piece of plastic wrap, pressing wrap directly onto surface of curd to prevent a skin from forming. Refrigerate until completely cool. (This can be made ahead of time; for a quick chill, place bowl in an ice water bath.)

Swiss Meringue
 
Makes about 4 cups
Ingredients
  • 1 cup (200 grams) extra-fine granulated sugar or castor sugar
  • ½ cup (120 grams) egg whites, room temperature
  • ½ teaspoon (2 grams) cream of tartar
  • ¼ teaspoon kosher salt
  • ½ teaspoon (4 gram) vanilla extract
Instructions
  1. In the heatproof bowl of a stand mixer, whisk together sugar, egg whites, cream of tartar, and salt. Place bowl over a saucepan of simmering water, and cook, whisking frequently, until sugar completely dissolves and an instant-read thermometer registers 120°F (49°C) to 130°F (54°C).
  2. Carefully return bowl to stand mixer. Using the whisk attachment, beat at high speed until stiff peaks form, 2 to 3 minutes. Beat in vanilla. Use immediately.

 

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