Equipment
* optional
Ingredients
Graham Cracker Crust
- 170 g graham crackers, crushed into fine crumbs
- 30 g granulated sugar
- 85 g unsalted butter, melted
- 1 g salt
Dark Chocolate Pudding Layer
- 100 g granulated sugar
- 25 g cocoa powder, unsweetened
- 25 g cornstarch
- 2 g salt
- 360 ml whole milk
- 3 egg yolks
- 85 g semisweet chocolate chips
- 30 g unsalted butter, cubed, room temperature
- 5 ml vanilla extract
White Chocolate Espresso Mousse
- 7 g powdered gelatin
- 30 ml cold water
- 170 g white chocolate, chopped or chips
- 120 ml whole milk
- 5 g espresso powder
- 240 ml heavy cream, cold
Whipped Topping
- 240 ml heavy cream, cold
- 30 g powdered sugar
- 5 ml vanilla extract
- cocoa powder
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 598 kcal
- Protein
- 7 g
- Carbohydrates
- 51 g
- Fat
- 42 g
- Fiber
- 2 g
- Sugar
- 41 g
- Sodium
- 217 mg
- Saturated Fat
- 26 g
- Trans Fat
- 1 g
- Monounsaturated Fat
- 10 g
- Polyunsaturated Fat
- 2 g
- Cholesterol
- 147 mg
- Potassium
- 510 mg
- Calcium
- 194 mg
- Iron
- 3.3 mg
- Magnesium
- 28 mg
- Phosphorus
- 159 mg
- Zinc
- 0.8 mg
- Vitamin A
- 321 mcg
- Vitamin C
- 0 mg
- Vitamin D
- 1.7 mcg
- Vitamin E
- 1.2 mg
- Vitamin K
- 5 mcg
- Vitamin B6
- 0.1 mg
- Vitamin B12
- 0.5 mcg
- Thiamin
- 0.10 mg
- Riboflavin
- 0.30 mg
- Niacin
- 0.6 mg
- Folate
- 24 mcg
- Water
- 79 g
- Alcohol
- 0 g
- Caffeine
- 7 mg
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat the oven to 175°C/350°F.
Combine crushed graham crackers, 30g sugar, salt, and melted butter in a bowl until the mixture resembles wet sand.
Press the crumb mixture firmly into the bottom and up the sides of a 9-inch pie dish. Bake for 10 minutes until set and fragrant, then cool completely on a wire rack.
For the chocolate layer: In a medium saucepan off heat, whisk together 100g sugar, 25g cocoa powder, cornstarch, and salt. Whisk in milk and egg yolks until smooth.
Place saucepan over medium heat. Whisk constantly until the mixture thickens and bubbles. Once boiling, continue whisking for 1 minute to cook out the starch.
Remove from heat. Immediately stir in semisweet chocolate chips, cubed butter, and vanilla until smooth and glossy. Pour into the cooled crust and smooth the top. Refrigerate uncovered for at least 30 minutes to form a skin.
For the mousse layer: Sprinkle gelatin over cold water in a small bowl and let it bloom for 5 minutes.
Heat 120ml milk in a small saucepan until steaming (do not boil). Whisk in the espresso powder until dissolved.
Add the bloomed gelatin to the hot espresso milk and whisk until fully dissolved. Pour this hot mixture over the white chocolate in a heat-proof bowl. Let sit for 1 minute, then whisk until smooth.
Let the white chocolate mixture cool to room temperature (about 25°C/77°F). It should remain fluid but not be warm to the touch.
Whip 240ml heavy cream to medium peaks. Gently fold one-third of the whipped cream into the cooled white chocolate base to lighten it, then fold in the remaining cream until no streaks remain.
Pour the mousse over the chilled chocolate pudding layer. Refrigerate for at least 4 hours, or until completely set.
Before serving, whip the remaining 240ml heavy cream with powdered sugar and vanilla to soft peaks. Spread or pipe over the pie. Dust with cocoa powder if desired.
Chef's Notes
- To ensure clean slices, run your knife under hot water and wipe it dry between every cut.
- The quality of the white chocolate matters significantly here; avoid 'white baking chips' which often contain no cocoa butter and won't melt smoothly. Use a bar or high-quality couverture chips.
- If you prefer a stronger coffee punch, increase the espresso powder to 8g, but be aware it will darken the color of the white mousse slightly.
- Make sure the chocolate pudding layer has formed a skin before pouring the mousse, otherwise the layers may bleed together.
Storage
Refrigerator: 3 days — Cover loosely with plastic wrap to prevent skin formation or absorption of fridge odors.
Troubleshooting
White chocolate mixture seized or is lumpy
Cause: Liquid was too hot or a tiny amount of water got into the chocolate before the milk
Fix: If just lumpy, gently reheat over a double boiler until smooth, then cool again before folding cream.
Prevention: Ensure milk is hot enough to melt chocolate but not boiling; add liquid all at once
Mousse layer is runny after folding
Cause: White chocolate base was too warm when cream was added, melting the fat in the cream
Fix: Chill the finished pie for an extra 2-4 hours; it may end up denser but should still set due to gelatin.
Prevention: Cool base to room temperature (approx 25°C) before folding
Cultural Context
This pie is a modern evolution of the classic 'Black Bottom Pie' and French silk traditions, marrying the American love for graham cracker crusts with European-style mousse techniques. The 'mocha' flavor profile pays homage to the historic coffee houses of Yemen (Mocha), where coffee beans with chocolate notes were first traded globally.
