Ingredients
Pâte à Choux (makes 20-22 eclairs)
1/2 cup (125g) water
1/2 cup (125g) milk
8 tbsp (125g) unsalted butter
1 tsp (5g) salt
2 tsp (10g) granulated sugar
1 cup (150g) all-purpose flour
5 ea. (250g) large eggs
powdered sugar for dusting
Chocolate Custard and Icing (makes 12 eclairs)
Chocolate Mixture
1/2 cup (125ml) milk
1.4 ounces (40g) cocoa powder
4.3 ounces (130g) dark chocolate 58 to 64%
Custard
2 cups (500ml) milk
1/4 cup + tbsp (60g) granulated sugar
1 ea. vanilla bean or 1 tsp (5ml) vanilla extract
5 ea. (100g) egg yolks
1/4 cup + tbsp (60g) granulated sugar
1.4 ounces (40g) cornstarch
Chocolate Icing (Ganache Glaze)
3/4 cup (190ml) heavy cream
1 tbsp (10g) cocoa powder
5 ounces (150g) bittersweet chocolate
Steps
Pâte à Choux Method
Bring water, milk, butter, sugar and salt to a boil in a medium saucepan. Remove from heat. Using a wooden spoon, quickly stir in flour. Cook over medium-high heat, stirring constantly, until mixture pulls away from sides for about 2 minutes.
Transfer to the bowl of an electric mixer filled with the paddle attachment. Mix on low speed for about 1 minute to get the steam out and cool down a bit, then add 4 eggs, 1 at a time, until a soft peak forms when batter is touched with your finger. If peak does not form, add remaining egg or half of it. Follow the same method if mixed by hand using a rubber spatula.
Pipe eclairs on a baking sheet lined with a silicon mat or parchment using an open star pastry tip. The use of a star piping tip (or nozzle) to pipe pâte à choux is essential to allowing the batter to expand evenly with minimal cracking during the baking process The ridges created by piping the pâte à choux with a star tip creates gaps that allows the choux to expand evenly during baking. Dust eclairs with powdered sugar before baking instead of using egg wash.
Set the oven rack adjusted to middle position. Bake one sheet at a time (10 eclairs).
If using a conventional oven: Bake in preheated 450F (230C) oven for 5 minutes, then lower temp to 350F (180C) and continue baking for 30 minutes more. Do not open the oven door during baking or it will deflate. Then, turn oven off leaving the oven door ajar to allowing pâte à choux to dry for 15 minutes. Remove from oven and let cool completely on wire rack.
If using a convection oven: Lower temperature to 425F (215C) and shortnen baking time by 5 minutes or so.
Baked pâte à choux can be refrigerated for days or frozen for months before being filled
Chocolate Mixture
Bring milk to boil and turn off the heat
Mix in the chopped chocolate and cocoa powder until smooth and set aside
Custard
Bring milk, sugar and vanilla to a boil. Meanwhile beat egg yolks and sugar and add cornstarch. When the milk boils remove from the heat and temper the yolk mixture with one-third of the hot milk whisking constantly. Pour the tempered mixture into the saucepan and return to the heat; bring pastery cream to boil and cook for 2 minutes whisking swiftly on medium heat. Remove from the stove and mix in the chocolate mixture (chocolate ganache) pass though a fine mesh-sieve and cool down completely, cover with plastic wrap in contact to prevent a skin from forming. Once completely chilled, whisk the chocolate custard until smooth. Make holes on the backs of the pâte à choux. Fill a pastry bag fitted with a small plain pastry tip, gently pipe the custard generously into the eclairs. Refrigerate before dipping into the glaze.
Chocolate Icing (Ganache Glaze)
Melt chocolate over a water-bath. In a small saucepan, heat the cream over medium heat just until it boils. Turn off the heat and mix in the red cocoa powder. Pour the hot chocolate cream over the melted chocolate and stir until smooth and strain in a fine mesh sieve. Set aside and cool down to 105F (40C) before using. This glaze can be made up to 3 days in advance. Cover and refrigerate until ready to use, and rewarm in a microwave or over hot water when ready to use.
Finishing
Dip the tops of the chilled eclairs in the warm chocolate icing and set on a sheet pan. Eclairs can be refrigerated up to 3 days.