Vintage Strawberry Lambeth Cake

A three-layer strawberry cake made with reduced berry puree and freeze-dried strawberries, filled with strawberry preserves, and finished with firm vanilla buttercream in an ornate Lambeth piping style.

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Prep Time 1 30

Cook Time 40

Cooling 3

Total Time 5 10

Servings: 12 slices

Course: Dessert

Cuisine: American

Calories: 1110

Ingredients Equipment Method Notes

Ingredients

250 g fresh or frozen strawberries Hulled if fresh; for the strawberry reduction
25 g freeze-dried strawberries Ground into a fine powder
320 g all-purpose flour Spooned and leveled if not weighed
10 g baking powder Approximately 2 1/2 teaspoons
4 g fine sea salt For the cake batter
170 g unsalted butter Softened to 20 to 22°C for the cake
300 g granulated sugar For the cake batter
45 g neutral vegetable oil Such as canola or grapeseed oil
150 g large eggs About 3 large eggs without shells, at room temperature
10 g pure vanilla extract For the cake batter
80 g whole milk At room temperature
100 g full-fat sour cream At room temperature
10 g unsalted butter Softened, for greasing the pans
240 g thick strawberry preserves Strained if the fruit pieces are large
10 g fresh lemon juice For the strawberry filling
570 g unsalted butter Softened to 20 to 22°C for the buttercream
950 g confectioners’ sugar Sifted
75 g heavy cream At room temperature
15 g pure vanilla extract For the buttercream
3 g fine sea salt For the buttercream
2 g pink gel food coloring Divide between pale and deeper pink buttercream

Equipment

Three 6-inch round cake pans, each approximately 2 inches deep
Parchment paper rounds
Digital kitchen scale
Small heavy-bottomed saucepan
Food processor or spice grinder
Stand mixer with paddle attachment
Fine-mesh sieve
Large and medium mixing bowls
Flexible spatula and offset spatulas
Wire cooling racks
6-inch or 8-inch cake board
Cake turntable and bench scraper
Piping bags
Small open-star, medium open-star, petal, and round piping tips
Toothpick or cake decorating scribe

Method

Place the strawberries in a small heavy-bottomed saucepan and cook over medium heat, stirring and crushing the fruit frequently, until the mixture is thick, glossy, and reduced to 100 g, about 10 to 14 minutes. A spatula drawn across the pan should leave a trail that remains visible for several seconds. Transfer the reduction to a shallow bowl and cool completely to room temperature. Warm puree can melt the creamed butter and reduce the batter’s aeration.
Heat the oven to 175°C or 350°F with a rack in the center. Grease three 6-inch round cake pans with the 10 g softened butter, line the bottoms with parchment, and lightly grease the parchment. Grind the freeze-dried strawberries in a food processor or spice grinder, then sift them into a medium bowl with the flour, baking powder, and salt. Whisk for 30 seconds so the leavening and berry powder are evenly dispersed.
Fit a stand mixer with the paddle attachment. Beat the 170 g softened butter and granulated sugar on medium speed for 3 minutes, stopping once to scrape the bowl and paddle. The mixture should look noticeably lighter and slightly fluffy, not greasy. Add the oil gradually and beat for another minute until emulsified. Proper aeration creates a fine crumb, but excessively warm butter will look shiny and will not hold the tiny air pockets needed for lift.
Add the eggs to the creamed mixture one at a time on medium-low speed, mixing until each disappears before adding the next, then blend in the vanilla. Whisk the cooled strawberry reduction, milk, and sour cream together. On low speed, add the dry ingredients in three additions, alternating with the strawberry mixture in two additions. Stop when only a few flour streaks remain, then fold by hand until smooth. Divide about 440 g of batter into each prepared pan and level the tops.
Bake all three pans on the center rack for 25 to 30 minutes, rotating their positions after 20 minutes only if the oven browns unevenly. The cakes are done when the centers spring back under a light touch, the edges begin to pull from the pans, and a skewer returns with a few moist crumbs but no wet batter. Cool in the pans for 15 minutes, turn onto wire racks, remove the parchment, and cool completely before wrapping or assembling.
Clean the mixer bowl and beat the 570 g softened butter with the paddle on medium speed for 3 minutes until smooth and slightly pale. Add the sifted confectioners’ sugar in four additions on low speed, alternating with 60 g of the cream. Add the vanilla and salt, then beat on medium-low for 2 minutes. Mix in the remaining 15 g cream. The buttercream should form a firm peak with a softly curved tip; beat in the pink gel coloring until evenly tinted.
Level domed cake tops with a serrated knife if necessary. Stir the strawberry preserves with the lemon juice. Secure one layer to a cake board with buttercream, pipe a thick buttercream dam around its edge, and spread 120 g filling inside without crossing the dam. Repeat with the second layer, then place the final layer upside down for a flat top. Apply a thin crumb coat over the cake with an offset spatula and chill uncovered for 30 minutes until firm.
Reserve approximately 700 g buttercream for piping and use the remainder to cover the chilled cake. Spread a generous coat over the top and sides, then refine it with a bench scraper held vertically against the turning cake. Fill gaps and scrape again until the surface is smooth and about 6 mm thick. Chill for 20 minutes. Divide the reserved buttercream between piping bags fitted with open-star, petal, and round tips, deepening part of it with additional coloring already measured into the formula.
Use a toothpick or decorating scribe to mark evenly spaced points around the chilled cake. Pipe overlapping shells along the top and bottom borders, then connect the side marks with two layers of swags. Add petal-tip ruffles, star-tip flourishes, and small round-tip dots where the swags meet, keeping steady pressure and releasing before lifting each tip. Chill the finished cake for 20 minutes to set the design, then stand it at room temperature for 30 to 45 minutes before slicing with a warm, dry knife.

Notes

Weigh the cooked strawberry reduction rather than judging it only by volume. Too much puree introduces enough water to weaken the crumb, while an over-reduced paste will be difficult to distribute evenly.
Keep the cake ingredients near room temperature. If the eggs or dairy are cold, the butter mixture can curdle; pause and warm the outside of the bowl briefly with a warm towel before continuing.
Do not overmix after adding the flour. Finish the final streaks with a flexible spatula, scraping through the bottom of the bowl where pockets of dry flour and dense butter often hide.
Practice each Lambeth border on parchment before piping the cake. Scrape the practice buttercream back into its bag as long as it remains cool, smooth, and free from crumbs.
If the piped shells look ragged, the buttercream may be too cold. Knead the piping bag gently with warm hands. If the swags slump, refrigerate the bag for 5 to 10 minutes before continuing.