- Prep
- 25 min
- Cook
- 10 min
- Total
- 35 min
- Serves
- 8
Ingredients
What you’ll need — tap to tick off as you go
- 300 g
- 150 g
- 1 tbsp
- 60 ml
- 400 ml
- 1 tsp
- 1 pinch
Process
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Line a 22 x 12 cm loaf pan with two overlapping sheets of plastic wrap, leaving 10 cm overhang on all sides. Smooth the wrap into the corners so the semifreddo releases cleanly later.
Put 300 g mixed berries in a bowl with 50 g granulated sugar and 1 tbsp lemon juice. Crush lightly with a fork so some berries stay whole, then set aside to macerate for 15 minutes.
Combine 100 g granulated sugar and 60 ml water in a small saucepan. Heat over medium heat, stirring until the sugar dissolves, then stop stirring and let it come to a bare simmer for 2 minutes. Do not let it brown.
While the syrup simmers, put 4 egg yolks in a heatproof bowl and whisk for 30 seconds. Slowly stream the hot syrup into the yolks while whisking constantly, then return the bowl to the saucepan set over low heat.
Cook the yolk mixture over low heat, whisking without pause, for 4 to 6 minutes until it thickens to a loose custard that coats the back of a spoon and reaches 80°C on a thermometer. Do not boil or the yolks will scramble.
Strain the custard through a fine sieve into a large bowl, stir in 1 tsp vanilla extract and 1 pinch fine salt, then set the bowl over a larger bowl of ice water and stir until it is cool to the touch, about 5 minutes.
Whip 400 ml cold heavy cream in a chilled bowl with a hand mixer on medium speed until it holds soft, droopy peaks, about 2 minutes. Stop before it turns stiff or grainy.
Fold one third of the whipped cream into the cooled custard with a spatula to lighten it, then fold in the remaining cream in two additions until just combined and no white streaks remain.
Drain the macerated berries, reserving the syrup. Scatter half the berries over the cream base and fold two or three times only, leaving visible ribbons rather than a uniform pink.
Spoon the mixture into the lined loaf pan, drop in the remaining berries, and smooth the top. Fold the plastic overhang over the surface, press gently, and freeze for at least 6 hours or overnight until firm.
To serve, lift the semifreddo out by the plastic wrap, peel it away, and slice with a knife dipped in hot water and wiped dry between cuts. Drizzle with the reserved berry syrup.
Kitchen notes
Kitchen notes
- The most common failure is under-whipped cream: if it only reaches a thin liquid foam, the semifreddo will freeze into an icy brick. Whip to soft peaks that flop over when the beaters lift, and fold gently so you do not knock out the air.
- Cook the yolk custard to 80°C and no higher. Below that it stays raw and thin; above it curdles. If you see any specks of cooked egg, strain the custard again before cooling.
- Drain the macerated berries well. Excess juice added to the base turns to ice crystals and makes the slices weep; keep the syrup for serving instead.
- Freeze the loaf pan for 10 minutes before filling if your freezer runs warm, and press plastic wrap directly onto the surface to prevent ice crystals forming during the set.
Substitutions
- mixed berries→raspberries, strawberries, or blackberries, alone or combined
- heavy cream→whipping cream with at least 35% fat; lower-fat cream will not whip firmly
- granulated sugar→caster sugar, same weight
- lemon juice→lime juice for a sharper, more tropical note
Storage & reheating
Keep the semifreddo tightly wrapped in its plastic wrap, then in an airtight container, in the freezer for up to 2 weeks; after that it slowly develops ice crystals. For clean slices, transfer it to the fridge for 10 to 15 minutes before serving, or dip the knife in hot water and dry it between cuts. Do not thaw fully and refreeze, as the texture turns grainy. Any reserved berry syrup keeps in a covered jar in the fridge for up to 5 days.
FAQ
The questions we get asked most
Why is my semifreddo icy instead of creamy?
Icy texture almost always means the cream was under-whipped or the custard was still warm when folded in. Whip the cream to soft peaks and cool the yolk custard completely over ice before combining. Also drain the macerated berries well, since their juice freezes into crystals.
Can I make berry semifreddo without raw eggs?
This recipe already cooks the yolks to 80°C in a sugar syrup, so they are safely cooked rather than raw. If you want an egg-free version, replace the yolks and syrup with 200 g of whipped mascarpone or a cooked cornstarch base, though the texture will be denser.
How long does semifreddo need to freeze?
At least 6 hours, and overnight is better for a firm, sliceable set. If your freezer is packed or set warm, give it 8 to 10 hours. It is ready when the center feels solid and a knife slides through with only slight resistance.
Can I use frozen berries?
Yes, but thaw them fully in a sieve over a bowl and discard or reserve the excess liquid before macerating. Frozen berries release more water than fresh, and that water is the main cause of icy patches. Pat them dry with paper towel before folding in.
Why did my semifreddo separate or look curdled?
The custard was heated too high or the hot syrup was added to the yolks too fast. Add the syrup in a thin stream while whisking constantly, keep the heat low, and pull the bowl off as soon as the mixture coats a spoon. If it does curdle, strain it and fold in the cream as normal.
Can I make this in a different pan?
Yes. A 900 g loaf pan, a 20 cm springform pan, or individual ramekins all work. A springform gives wedges rather than slices, and ramekins freeze faster, in about 4 hours. Line whatever you use so the semifreddo releases cleanly.
How do I stop semifreddo from melting too fast at the table?
Serve it straight from the freezer onto chilled plates and slice only what you need. A 10-minute rest in the fridge softens it enough to cut without turning to soup. In hot weather, nestle the loaf pan in a bowl of ice between servings.
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