Ingredients
Equipment
Method
Strawberry Swirl
- Combine strawberries, 2 tbsp granulated sugar, and 1 tsp lemon juice in a small saucepan. Cook over medium heat for 8–10 minutes, mashing gently, until thick and jammy, then turn off the heat.
- Strain the strawberry swirl if desired to remove seeds, then cool completely. Spread it out if you need faster cooling.
Blueberry Swirl
- Combine blueberries, 2 tbsp granulated sugar, and 1 tsp lemon juice in a small saucepan. Cook over medium heat for 8–10 minutes, stirring and mashing gently until deep purple and thick, then turn off the heat.
- Cool the blueberry swirl completely before assembling. It should be room temperature so it doesn’t melt the cream base.
Whip and Assemble
- In a large chilled bowl, beat the cold heavy whipping cream with a hand mixer on high speed for 3–4 minutes until stiff peaks form. Stop when it holds a peak and looks thick, because overbeating can turn grainy.
- Gently fold sweetened condensed milk, vanilla extract, and salt into the whipped cream just until combined. Keep the mixture fluffy and don’t stir so long that the air deflates.
- Pour one-third of the white cream base into a 9×5 loaf pan. Drizzle generous spoonfuls of strawberry sauce over the top as the first red layer.
- Drizzle generous spoonfuls of blueberry sauce over the red layer. Repeat by adding another layer of white cream, then more strawberry and blueberry swirls.
- Drag a butter knife or skewer through the layers in long, sweeping S-curves for 4–5 passes only. Less is more—stop when you see marbling starting so the colors don’t muddy.
- Cover the loaf pan tightly with plastic wrap pressed directly on the surface. Freeze for at least 6 hours, preferably overnight, until completely firm.
Serve
- Let the ice cream sit at room temperature for 3–5 minutes before scooping. The edges should soften slightly while the center stays firm.
- Top each serving with fresh strawberries and fresh blueberries, plus white sprinkles or star-shaped sugar decorations if using. Serve immediately after garnishing.
Notes
For the cleanest marbling, make sure both swirls are completely cool and keep folding the base gently so it stays airy. Store in the freezer, covered tightly, for up to 2 weeks; thaw just 3–5 minutes at room temperature before scooping. Freezing is best here (no need to churn). For a lower-sugar option, use a reduced-sugar sweetened condensed milk substitute, and expect a slightly softer texture.
