triple lemon layer cake

How To Make triple lemon layer cake

• 1

  Make the cake: Position a rack in the center of the oven; heat the oven to 350. Generously butter and flour two 8x2 inch round cake pans. Sift the cake flour, baking powder, and salt together into a medium bowl. Pulse 1/4 cup of the sugar with the zest in a food processor until well combined.
• 2

  In a large bowl, beat the butter and lemon sugar with an electric mixer on medium speed until light and fluffy (about 1 1/2 minutes). Add the remaining 1 1/2 cups sugar and beat until smooth (about 1 1/2 minutes). Beat in a quarter of the milk just until blended. On low speed, add the flour mixture alternately with the milk in three batches, scraping the bowl with a rubber spatula; beat just until blended.
• 3

  In another large bowl, beat the egg whites with an electric mixer (with clean beaters or the whip attachment) on medium speed just until foamy. Add the cream of tartar, increase the speed to medium high, and beat just until the whites form stiff peaks when the beaters are lifted. Add a quarter of the whites to the batter and gently fold them in with a whisk or a rubber spatula; continue to gently fold in the whites, a quarter at a time, being careful not to deflate the mixture.
• 4

  Divide the batter evenly between the prepared pans. Smooth the tops with the spatula. Bake until a pick inserted in the center comes out clean, 35-40 minutes. Let cool in the pans on a rack for 10 minutes. Run a table knife around the inside of the pans and carefully invert each cake out onto the rack. Flip them right side up and let cool completely.
• 5

  To make the lemon curd: Melt the butter in a heavy medium saucepan over medium heat. Remove the pan from the heat and whisk in the sugar, lemon juice, zest, and salt. Whisk in the yolks until smooth. Return the pan to medium low heat and cook, whisking constantly, until the mixture thickens, 5-6 minutes. To check if the curd is thick enough, dip a wooden spoon into it and draw your finger across the back of the spoon; your finger should leave a path. Don't let the mixture boil. Immediately force the curd through a fine mesh sieve into a bowl, using a rubber spatula. Let cool to room temperature, whisking occasionally. Refrigerate, covered, until ready to use.
• 6

  With the palm of one hand press on top of a cake layer, cut each in half horizontally, using a long serrated knife. Put one of the four cake layers on a serving plate, cut side up. With an offset spatula or a table knife, spread a generous 1/3 cup chilled lemon curd on top of the cake layer. Lay another cake layer on top, spread it with another generous 1/3 cup lemon curd, and repeat with the third cake layer, using the last 1/3 cup lemon curd. Top with the fourth cake layer.
• 7

  Make the frosting: In a medium bowl, beat the butter and lemon zest with an electric mixer on medium speed until light and fluffy. Add the powdered sugar in batches and beat until light and fluffy. Add the lemon juice and beat for 1 minute. (You can make the frosting a couple of hours ahead and keep it, covered, at room temperature.)
• 8

  Frost the cake: Up to a few hours before serving, spread a thin layer of frosting on the cake, filling in any gaps as you go. Chill until the frosting firms a bit, about 1/2 hour. Spread the remaining frosting decoratively over the top and sides of the cake. Scatter with bits of lemon zest and dragees (if desired), or garnish as you like.
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