Cold-Infused Roasted Macadamia Mousse with Tart Passion Fruit & Salted Brittle
Precision is freedom. When I was running a frantic fine-dining line, desserts often collapsed under their own weight. This mousse is the antidote. The inspiration came from a simple realization: macadamia fat carries flavor brilliantly if you respect the temperature. We cold-steep roasted macadamia nuts in heavy cream overnight, letting the oils slowly infuse without scorching a single drop. I remember batching the very first version in my home kitchen, wiping the counter, labeling the deli container with blue painter's tape, and waiting. The next day, whipping it into a cloud-weight texture felt like unlocking a new level. What makes this special is the geometry of the bite. Rich, buttery nut fat needs an adversary. Enter a razor-sharp passion fruit reduction that cuts straight through the richness, grounded entirely by a shatter-crisp salted macadamia brittle. We are not adding steps here; we are simply improving decisions. Tip for making it your own: if you cannot find passion fruit, bright yuzu or meyer lemon zest will do the heavy lifting. Let it cool. Future you deserves clean slices. Enjoy the process.
Featured Recipe
Cold-Infused Roasted Macadamia Mousse with Tart Passion Fruit & Salted Brittle
Silky macadamia nut oils cold-steeped in heavy cream overnight, whipped into an airy, cloud-weight mousse. A razor-sharp passion fruit reduction cuts through the rich nut fat, grounded by a shatter-crisp salted macadamia brittle.
Save a copy to your collection for editing
Timeline
Ingredients
- 200 g Roasted macadamia nuts(unsalted; divided (120g coarsely crushed, 80g finely chopped))
- 360 g Heavy cream(minimum 36% milk fat; divided (240g cold, 120g unchilled))
- 100 g White chocolate(high quality 30-34% cocoa butter, finely chopped)
- 2 g Sheet gelatin(1 silver sheet, bloomed in cold water (or 1/2 tsp powdered gelatin bloomed in 15g cold water))
- 70 g Granulated sugar(for the brittle)
- 15 g Unsalted butter(cold, cubed)
- 1 g Fine sea salt(about 1/4 tsp; for balancing the chocolate base)
- 2 g Flaky sea salt(such as Maldon, for brittle and finishing)
- 80 g Fresh passion fruit pulp(strained of half the seeds, or pure unsweetened pulp)
- 5 g Fresh lime juice(1 tsp, for brightening the pulp)
Instructions
- 1
Place 120g roasted macadamia nuts (coarsely crushed) into a glass bowl or jar. Pour over 240g cold heavy cream. Cover tightly, label with painter's tape, and transfer to the refrigerator for 8 to 12 hours to cold-infuse.
5 min
Tip: Cold infusion pulls out pure, sweet roasted macadamia fats without scorching the dairy or extracting bitter tannins. Do not heat this cream.
- 2
In a small dry saucepan over medium heat, melt 70g granulated sugar undisturbed until the edges liquefy, then swirl gently until it reaches a deep amber color. Immediately take off the heat, stir in 15g unsalted butter, 80g roasted macadamia nuts (finely chopped), and 1g flaky sea salt. Pour onto a silicone baking mat, press thin with an offset spatula, and sprinkle the remaining 1g flaky sea salt over top. Let cool completely.
10 min
Tip: Work swiftly. Sugar goes from amber to scorched in ten seconds. Spreading it wafer-thin ensures instant crispness.
- 3
Heat the remaining 120g heavy cream in a small saucepan over medium-low until barely simmering (around 80°C / 175°F). Remove from heat, whisk in 2g sheet gelatin (squeezed dry of excess water) until dissolved, then pour over 100g white chocolate and 1g fine sea salt. Let stand 1 minute, then whisk from the center outward until completely smooth. Let cool to room temperature (about 28°C / 82°F).
8 min
Tip: Why this works: White chocolate provides body and sweetness; the gelatin provides hold. We cool it so it doesn't melt our cold whipped cream on contact.
- 4
Pour the chilled macadamia-cream mixture through a fine-mesh sieve into a chilled bowl, pressing firmly on the nuts with a flexible spatula to extract every drop of aromatic fat. Discard the spent solids. Whip the infused cream to medium, soft peaks.
5 min
Tip: Stop at medium peaks. Stiff whipped cream leads to a gritty mousse texture when folded into the chocolate base.
- 5
Gently fold one-third of the whipped infused cream into the cooled white chocolate base using a rubber spatula to lighten it. Add the remaining whipped cream and fold until completely homogenous with no white streaks. Divide evenly between 4 chilled glasses or dessert coupes. Chill in the refrigerator for at least 2 hours until softly set.
5 min
Tip: Two motions: cut down the middle, sweep around the bottom of the bowl. Be gentle to keep all that incorporated air.
- 6
In a small bowl, stir together 80g fresh passion fruit pulp and 5g fresh lime juice. Shatter the cooled brittle into sharp shards. Spoon 20g fresh passion fruit pulp mixture over the top of each chilled mousse and anchor 2-3 brittle shards directly into the cream just before serving.
4 min
Tip: Assemble the crunch at the last minute so moisture from the mousse doesn't dissolve the brittle. Maximum contrast, zero sogginess.
Chef's Notes
Why this works: Macadamia nuts have one of the highest natural fat contents of any nut, packed with delicate buttery aromatics. Boiling them in cream tends to muddy their flavor with cooked-milk notes. A slow cold-infusion draws out pure roasted perfume directly into the dairy fat. Pair that richness with the high-voltage acidity of fresh passion fruit, and you have instant equilibrium. Fix it fast: If your chocolate base gets too cold and begins to clump before you fold in the whipped cream, place the bowl over a pot of steaming water for just 5 seconds and whisk vigorously to restore fluidity. Do not fold cold cream into hot chocolate, or the mousse will collapse.
Theo Glass
Modern desserts, minimal fuss, maximum contrast.
Theo Glass—known as “The Minimalist Sweet Tooth”—is a calm, detail-obsessed pastry coach who left the white-tablecloth intensity of fine dining for the reality (and joy) of home kitchens. After years of building plated desserts with tweezers and timers, he realized the real magic wasn’t complicated garnish work—it was contrast, clarity, and control. Theo’s mission now is to help everyday bakers make desserts that feel modern and restaurant-level without turning their kitchen into a war zone. His style is precision with restraint: olive oil cakes that stay plush for days, tahini brownies that walk the line between nutty and bittersweet, miso custards that taste like “caramel’s smarter cousin,” and citrus-forward sorbets that pop without needing an ice-cream machine. Theo teaches fundamentals (emulsions, temperature, texture, salinity) in plain language, with steps that are clean, paced, and confidence-building. If you’ve ever said “I want to mix it up” but don’t want extra dishes, obscure tools, or chaos, Theo’s your person. He’ll show you how to mix it up the minimalist way: a smarter ingredient swap, a sharper contrast, and a clear path to repeatable results.