Piña Colada Frozen Mousse

Steps

1. 1

   Bloom and dissolve gelatin

   • Measure 1/4 cup (60ml) cold pineapple juice into a small saucepan.
   • Sprinkle 2 teaspoons (7g) unflavored gelatin over the juice.
   • Let sit undisturbed for 5 minutes so the gelatin absorbs the liquid (this is called blooming and helps it dissolve smoothly without lumps).
   • Place the saucepan over medium-low heat and stir gently and constantly with a whisk for 1–2 minutes until the gelatin is completely dissolved and the mixture looks clear.
   • Do not let it boil, as high heat damages the gelatin's setting power.
   • Remove from heat.

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   Ready when: Gelatin is completely dissolved and mixture is clear

   Tip: Don't boil the gelatin mixture—high heat damages its setting ability. If the heat seems too high, lower it and stir gently for a few more seconds.

2. 2

   Mix mousse base

   • To the warm gelatin mixture, add the remaining 3/4 cup (180ml) pineapple juice, stirring to combine.
   • Pour in 1 cup (240ml) full-fat coconut milk and stir until smooth.
   • Add 2 tablespoons (30ml) white or coconut rum if using, and 1 teaspoon (5ml) vanilla extract.
   • Add a pinch of salt (about 1/16 teaspoon or 0.3g).
   • Stir the mixture thoroughly for about 1 minute until everything is well blended and no streaks remain.

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   Ready when: Mixture is well blended and smooth

3. 3

   Cool the base mixture

   • Let the mousse base cool to room temperature, about 10 minutes, stirring occasionally.
   • If you'd like to speed this up, pour it into a bowl and set the bowl in an ice bath (a larger bowl filled with ice and a little water) for about 5–7 minutes, stirring every minute or so.
   • The mixture should feel cool to the touch but not ice cold before proceeding.
   • If the base is still warm when you fold in the whipped cream, it will deflate the air bubbles and make the mousse dense.

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   Ready when: Mixture is cool to the touch

   Tip: A warm mousse base will deflate your whipped cream, making the final texture dense and heavy instead of light and airy. Cool it thoroughly first.

4. 4

   Whip heavy cream

   • Pour 1 cup (240ml) cold heavy cream into a large mixing bowl.
   • Using an electric mixer on medium speed or a whisk, beat the cream for about 1–2 minutes until soft peaks form—the cream should make peaks that gently flop over when you lift the beaters or whisk.
   • Add 1/3 cup (65g) granulated sugar to the bowl and continue whipping for another 1–2 minutes until stiff peaks form—now the peaks should stand upright and hold their shape.
   • Stop beating as soon as stiff peaks form; if you overbeat, the cream can turn grainy or break into butter.

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   Ready when: Cream holds stiff peaks and is thick and glossy

   Tip: Stop whipping at stiff peaks—even a few seconds too long can turn the cream grainy and break. Keep the cream bowl and beaters cold for the best result.

5. 5

   Fold together gently

   • Pour the cooled mousse base over the stiff whipped cream.
   • Using a large spoon or silicone spatula, gently fold the mousse into the cream using a cutting and folding motion—go down through the center of the bowl, across the bottom, and up the side, rotating the bowl a quarter turn with each motion.
   • Repeat this 8–10 times, adding the mousse mixture in 3–4 additions rather than all at once.
   • Fold until you see no large white streaks and the mousse is just combined, with a uniform pale tan color.
   • Be gentle; aggressive stirring will deflate the whipped cream and ruin the light, airy texture.

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   Ready when: Mousse is blended with no large white streaks remaining

   Tip: Fold, don't stir. Aggressive mixing deflates the whipped cream and makes the mousse heavy and dense rather than light and airy.

6. 6

   Freeze and serve

   • Divide the mousse evenly among 6 serving glasses or bowls (about 2/3 cup or 5–6 oz each), or pour the entire mixture into an 8×8-inch (20×20 cm) baking dish.
   • Cover with plastic wrap to prevent ice crystals from forming and freeze for at least 4 hours, preferably overnight, until the mousse is firm and set throughout.
   • Just before serving, if desired, top each portion with 2–3 tablespoons (20–30g) diced fresh pineapple and 1–2 teaspoons (5–10g) toasted coconut flakes for color and texture.
   • Serve straight from the freezer—the mousse should be cold and creamy, not soft or melting.

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   Ready when: Mousse is firm throughout and scoops cleanly

   Tip: Cover the mousse tightly to prevent ice crystal formation, which makes the texture grainy. A piña colada mousse is best served straight from the freezer for optimal texture.