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Active Prep Time: 10 minutes
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Chilling Time: 2 hours (minimum)
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Total Time: 2 hours 10 minutes
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Yield: 4 Servings
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Dietary Profile: Vegetarian | Gluten-Free | No-Bake
Why You’ll Love This Recipe
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Only 3 Simple Ingredients: No gelatine, no raw eggs, and no complex cooking techniques required.
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Fail-Proof Texture: Combining whipped double cream with condensed milk and fresh citrus creates a silky, melt-in-your-mouth structure naturally.
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Make-Ahead Friendly: Prepare it up to two days in advance for easy hosting.
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Vibrant & Citrusy: The acidity of fresh lemon juice cuts through the richness of the cream, creating a refreshing, perfectly balanced bite every time.
The Science Behind the Mousse
Unlike traditional french mousses that rely on whipped egg whites or gelatin for stability, this recipe uses a quick chemical reaction between acid and dairy proteins. The natural citric acid in the freshly squeezed lemon juice reacts with the heavy cream and sweetened condensed milk, gently thick-cutting and setting the mixture into a rich, velvety consistency without needing any heat.
Ingredients List
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Heavy Cream / Double Cream (min 36% fat): 1 cup (240 ml), cold
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Sweetened Condensed Milk: ½ cup (150 g / approx. half a standard can)
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Fresh Lemon Juice: ⅓ cup (80 ml) — from about 2 to 3 medium lemons
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Optional Garnish: Fresh lemon zest, mint leaves, or whipped cream swirls
Step-by-Step Instructions
Step 1: Whip the Cream Base
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In a cold mixing bowl, pour in the chilled heavy cream.
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Using a hand mixer or stand mixer fitted with a whisk attachment, beat the cream on medium-high speed until soft peaks form (about 2 to 3 minutes).
Step 2: Incorporate the Sweetened Condensed Milk
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Pour the sweetened condensed milk into the whipped cream.
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Gently fold with a rubber spatula or mix on low speed for 15–20 seconds until smoothly combined.
Step 3: Add Fresh Lemon Juice (The Transformation)
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Slowly pour the freshly squeezed lemon juice into the cream mixture while folding continuously.
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As you stir, you will notice the mixture instantly thicken into a rich, silky mousse texture. Fold gently until completely smooth and unified.
Step 4: Portion & Chill
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Spoon or pipe the lemon mousse evenly into 4 small serving glasses, ramekins, or dessert cups.
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Top each glass with freshly grated lemon zest for a pop of color and citrus aroma.
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Cover with plastic wrap and chill in the refrigerator for at least 2 hours (or overnight) to allow the mousse to set completely and cold-infuse its flavor.
Pro Chef Tips for Success
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Use Fresh Lemons Only: Bottled lemon juice lacks the bright floral notes and precise acidity needed to set the dairy correctly.
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Keep Dairy Cold: Ensure your heavy cream is straight out of the fridge. Cold cream whips faster and holds air much better.
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Don’t Over-Whip: Watch the cream carefully—whip just until soft-to-medium peaks form. Over-whipping can cause the cream to turn grainy once the lemon juice is added.
Variations & Serving Ideas
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Lemon Crisp Parfait: Layer the mousse with crushed graham crackers or crushed gingersnap cookies in shot glasses for mini dessert shooters.
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Berry Twist: Serve topped with fresh raspberries, blueberries, or a warm berry compote to contrast the yellow lemon zest.
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Citrus Swap: Replace half of the lemon juice with fresh lime or passion fruit juice for a tropical variation.
Storage & Shelf Life
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Refrigeration: Store covered in the refrigerator for up to 3 days. The texture remains light and fluffy without separating.
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Freezer (Lemon Ice Cream Treat): Freeze individual glass cups for 3–4 hours for a semi-frozen, gelato-like dessert!
Nutrition Facts
Serving Size: 1 Individual Glass (approx. ½ cup / 120 g)
Yield: 4 Servings
| Nutrient | Amount Per Serving |
| Calories | 310 kcal |
| Total Fat | 22 g |
| Saturated Fat | 14 g |
| Trans Fat | 0.5 g |
| Cholesterol | 70 mg |
| Sodium | 55 mg |
| Total Carbohydrate | 24 g |
| Dietary Fiber | 0.2 g |
| Total Sugars | 23 g (From condensed milk) |
| Protein | 4 g |
| Vitamin C | 15% DV |
| Calcium | 12% DV |