Frédéric Bau, École du Grand Chocolat Valrhona

Chocolate Éclairs

Name: Chocolate Éclairs
Prep time: 1 h
Cook time: 20 min
Total time: 2 h 20 min
Yield: Serves 6–8
Ingredients: 1 tablespoon (¼ oz./10 g) cornstarch; 2 egg yolks; Scant ¼ cup (50 ml) water; Scant ¼ cup (60 ml) whole milk; Scant ¼ cup (60 ml) whole milk; 1 pinch table salt; 1 pinch sugar; 1 pinch sugar; 2 tablespoons plus 2 teaspoons (40 g) butter; ⅔ cup (2 oz./60 g) cake flour; 2 eggs; 4 ½ oz. (130 g) bittersweet chocolate, 70 percent cocoa; 4 ½ oz. (130 g) bittersweet chocolate, 70 percent cocoa; 4 ½ oz. (130 g) bittersweet chocolate, 70 percent cocoa; 4 ½ oz. (130 g) bittersweet chocolate, 70 percent cocoa; ½ cup minus 1 ½ tablespoons (100 ml) whipping cream; ½ cup minus 1 ½ tablespoons (100 ml) whipping cream