Chocolate Blueberry/Lemon Inlay Roll Cake
Servings
10
Servings
10
Ingredients
Lemon Curd
Blueberry Filling
Whipped Cream Cheese Filling
Pattern Batter
Cake Batter
Instructions
Lemon Curd
  1. Combine sugar & lemon zest in a saucepan. Either with the back of a spoon or your finger tips rub the zest into the sugar. This will coat the sugar crystals with fragrant oils from the lemon peel, adding a whole new dimension of intense lemon flavor to the curd.
  2. Add the whole egg & extra egg yolks to the saucepan with the lemony sugar & whisk until smooth. Mix in lemon juice.
  3. Add butter then place the saucepan over medium heat. Whisk gently & continuously for 6-9 minutes until thick enough to coat the back of a spoon. Do not walk away because it will transform very quickly. Once you see a bubble emerge from the surface, this indicates that it is thick enough. Do not let it boil.
  4. Immediately pour the hot curd through a fine mesh sieve to remove any pieces of lemon zest or cooked egg white into a dish. Place a piece of plastic wrap directly in contact with the surface & refrigerate until thoroughly chilled & ready to use.
Blueberry Filling
  1. Place all blueberry filling ingredients in a small saucepan. Heat on medium high until blueberries soften & mixture thicken, about 5 minutes. Remove from heat & allow to cool for 5 minutes or so then place in a blender & puree until smooth. This makes it easier when slicing the cake roll. Place in a small dish & cool until ready to use.
Whipped Cream Cheese Filling
  1. For best results, place bowl of the electric mixer & whisks in the freezer for a few minutes to make them real cold. When chilled, place cream cheese & powdered sugar in the bowl & beat together until smooth. Scrape down the bowl as needed. With mixer running on low, add the vanilla & stream in the whipping cream. Turn the speed up & whip until stiff peaks form. Refrigerate until ready to use.
Roll Cake Pattern
  1. Cream together butter, flour, sugar & egg white with a whisk until smooth. Place batter into a piping bag. Trace or free hand your pattern onto a piece of parchment paper. If you want a specific part of the image to appear on the top of the roll cake, place that part of your pattern about 3/4 of the way down the paper.
  2. Before putting the template onto a 10″ x 15″ jelly roll pan , using a pastry brush (or your fingers), grease the bottom (but not the sides) with vegetable oil. Line the bottom of the greased pan with the template, pressing down to remove any air bubbles. Set aside. By NOT greasing or covering the sides of the pan, the cake sticks to the sides of the pan, helping the cake to rise while baking.
  3. Pipe out your design, keeping in mind that the cake will be viewed in reverse. Place the pan in the freezer until the batter is frozen solid, for about 20 minutes.
Chocolate Cake
  1. Preheat oven to 350 F.
  2. In a small bowl, combine flour, cocoa, baking powder & salt. Set aside.
  3. In another bowl, whip egg whites until foamy, gradually adding HALF of the sugar. Beat until stiff peaks form. In a third large bowl, beat egg yolks until thick. Add remaining sugar, vanilla & water; beat until very thick. Gradually fold in flour mixture then egg whites gently folding JUST until fully incorporated so as not to deflate the eggs.
  4. Remove the jelly roll pan from the freezer & pour the cake batter over the frozen design. Gently tap the sheet against the counter to make sure that the batter gets down into all the little nooks & crannies of your design.
  5. Bake in the center of the oven until cake for about 15 minutes or until it tests done with a toothpick. Loosen edges & immediately turn cake onto a piece of parchment paper. REMOVE the parchment that was on the bottom of the cake (while it was baking). Starting at the narrow end, roll up cake in the parchment (you just turned the cake out on to) & cool completely.
Assembling the Cake Roll
  1. Once fully cooled, gently unroll the cake & separate it from the parchment paper.
  2. Spread an even layer of lemon curd onto the cake, leaving about an inch of space around the edges so the filling doesn’t ooze out. Next, drizzle a wavy line of blueberry filling over the lemon curd. Then lastly, pipe some of the cream cheese filling in between your blueberry lines. Try to not OVERFILL the cake roll BUT giving it as generous amount of filling as possible.
  3. Very gently roll the cake back into its spiral shape. Set the cake on a platter with your design on top. Cover with plastic wrap & chill in refrigerator for at least 30 minutes or longer.
  4. Slice & serve.