01 -
Combine frozen blueberries, granulated sugar, and water in a small saucepan. Cover and bring to a gentle simmer over medium heat.
02 -
Uncover the saucepan and continue simmering, stirring occasionally, until most of the liquid evaporates and the mixture reaches a thick, jam-like consistency, about 10–15 minutes. Transfer to a bowl and cool completely.
03 -
Preheat the oven to 175°C. Line three 15cm round cake pans with parchment paper rounds at the base only.
04 -
Separate egg whites and egg yolks into two large mixing bowls. Ensure no yolk contaminates the whites.
05 -
Add cream of tartar to the egg whites. Using an electric hand mixer on low speed, beat the egg whites until foamy.
06 -
Gradually incorporate granulated sugar into the foamy egg whites, beating after each addition. Continue mixing until stiff peaks form, then set aside.
07 -
Add milk, oil, and vanilla extract to the egg yolks. Mix until combined. Sift cake flour and baking powder into the yolks and mix until smooth.
08 -
Gently fold one-third of the meringue into the egg yolk mixture until just combined. Fold in the remaining meringue in two additions, stirring until few streaks remain and batter is uniform.
09 -
Divide batter evenly among the prepared pans, approximately 185–200 g per pan. Gently tap pans on the counter to release large air bubbles.
10 -
Bake in preheated oven for 25–27 minutes, or until surfaces are golden and spring back when gently pressed. Immediately invert pans onto a wire rack and let cool completely.
11 -
Once cooled, run an offset spatula around cake edges to loosen. Remove from pans and peel away parchment bases.
12 -
In a large bowl, combine whipping cream, powdered sugar, 3 tablespoons reserved blueberry compote, and vanilla extract. Whip with an electric mixer until stiff peaks form.
13 -
Place the first cake layer on a turntable or plate. Spread a layer of blueberry whipped cream evenly over the surface. Add a layer of blueberry compote in the center, then top with another cake layer. Repeat layering.
14 -
Frost the entire cake with a thin layer of whipped cream to seal in crumbs. Chill in the refrigerator for 10 minutes to set, if desired.
15 -
Apply a generous layer of whipped cream over the chilled cake. Use a bench scraper to smooth the sides and remove excess frosting.
16 -
Garnish with fresh or thawed blueberries and sprigs of thyme as desired before serving.