The Moulding of Iced Biscuits

Ingredients

Equipment Needed

• •8 1/2 by 4 1/2 inch (21.5 by 11.5 cm) metal loaf tin, about 6 cups (1.4 litres)
• •Stand mixer or electric hand mixer
• •Small heavy saucepan
• •Sugar or instant-read thermometer
• •Fine-mesh sieve
• •Freezer-safe film and parchment
• •Long slicing knife
• •8 small fluted paper cases

Instructions

1. 1

   Reduce the strawberry

   Purée the strawberries and press them through a fine sieve into a small saucepan. Add the 2 tablespoons of sugar and simmer gently, stirring often, until reduced to a thick 1/4 cup (60 ml / about 70 g), 5 to 7 minutes. A spoon drawn across the pan should leave a path for a moment. Cool the reduction completely; warm fruit collapses the cream and blurs the bands. If it reduces to a paste, loosen it with a teaspoon of cold strawberry purée or water. Ça se rattrape.

   The reduction supplies concentrated fruit without enough free water to make the strawberry band icy. Frozen berries are an honest choice when fresh ones have little perfume.
2. 2

   Line the mould

   Line an 8 1/2 by 4 1/2 inch (21.5 by 11.5 cm) metal loaf tin with freezer-safe film, pressing it closely into the corners and leaving enough overhang to lift the brick later. Cut a rectangle of parchment to fit directly against the final surface. Chill the lined tin while you make the bombe.

3. 3

   Whip the cream

   Whip the cold cream to soft peaks. It should mound and then bend from the whisk, not stand stiff. Hold it in the refrigerator. If you take it too far and it begins to look grainy, fold in a tablespoon of unwhipped cream until it becomes supple again.

4. 4

   Make the pâte à bombe

   Put the 2/3 cup sugar and water in a small heavy saucepan. Heat gently until the sugar dissolves, then boil without stirring to 244°F (118°C). Meanwhile, whisk the yolks and salt until loosened. With the mixer running at medium speed, pour the hot syrup in a thin stream down the inside of the bowl, never directly onto the beaters. Increase the speed and whisk for 6 to 8 minutes, until the mixture is pale, thick enough to fall in a ribbon, and no longer warm.

   If crystals form around the syrup before it reaches temperature, cover the pan for 30 seconds so condensation washes the sides. If it turns sandy, add a tablespoon of water and melt it gently before continuing.
5. 5

   Fold and divide

   Fold one-third of the whipped cream into the pâte à bombe to lighten it, then fold in the remainder in two additions, turning the bowl and cutting through the center so the volume stays intact. Transfer about 1 cup (240 ml) of the base to the cold strawberry reduction and fold until evenly rose-pink. Put another 1 cup (240 ml) in a second bowl and fold in the violet syrup, with a drop or two of coloring only if needed. Fold the vanilla into the remaining base. Keep all three mixtures cold.

6. 6

   Set the three bands

   Spread the strawberry mixture across the bottom of the chilled mould to roughly one-quarter of its depth, smoothing it firmly into every corner. Freeze for 25 to 35 minutes, until the surface resists a light fingertip. Add the vanilla mixture, bringing the mould to about three-quarters full, and freeze again for 35 to 45 minutes. Finish with the violet mixture and level it flush with the rim. If one layer pulls into the next, stop and return the mould to the freezer until the surface firms; dragging through a soft band only makes the muddle worse.

7. 7

   Freeze the brick

   Lay the fitted parchment directly against the violet surface, cover the tin tightly, and freeze on a level shelf for at least 6 hours, preferably overnight. Count the freezing time from the moment the completed brick goes into the freezer. It is ready when the center feels completely rigid under gentle pressure.

8. 8

   Unmould and cut

   Chill a platter and eight paper cases. Lift the brick from the tin by its lining and peel the film away. If it refuses to release, press a towel wrung out in warm water against the outside of the tin for 5 seconds, then try again. Warm a long knife, wipe it completely dry, and cut straight down through all three bands into 8 even rectangles. Wipe and rewarm the knife after every cut so the faces remain clean. If the edges begin to slump, return the brick to the freezer for 15 minutes before continuing.

9. 9

   Case and serve

   Place each rectangle in a paper case with its striped cut face clearly visible. Top with a candied violet if using, then return the biscuits to the freezer until needed. Move them to the refrigerator for 8 to 10 minutes before serving, just long enough for the spoon to enter without the bands losing their shape. À table!

Chef Tips

• •Violet syrup must be made for cooking, not fragrance. Taste it before adding: it should suggest the flower softly, not announce itself like a perfume counter.
• •Keep the outer bands close to equal thickness and give the vanilla center about twice their depth. That geometry is what lets every vertical slice carry the complete strawberry, vanilla, and violet pattern.
• •Cold mutes flavor. The unfrozen mixtures should taste slightly fuller and sweeter than you expect the finished biscuits to taste, but resist adding extra liquid flavoring because too much water or alcohol weakens the set.
• •Use a metal loaf tin rather than glass or heavy ceramic. Thin metal conducts the freezer's cold quickly and gives the brick firmer corners.

Advance Preparation

• •The strawberry reduction can be made up to 2 days ahead and held covered in the refrigerator. Bring it only to refrigerator temperature before folding, never room temperature.
• •The completed brick is at its best made the day before serving. Keep it tightly wrapped in the mould for up to 3 days so the exposed cream does not collect freezer odors.
• •The biscuits may be sliced and placed in their paper cases several hours ahead. Arrange them in one layer in a covered freezer container, then temper them briefly in the refrigerator before serving.

Frequently Asked Questions

Nutrition Information

1 serving (about 118g)