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Home » Confectionery » Chocolate Confections » Matcha Opera Cake

Matcha Opera Cake

October 28, 2022 by Victor @ Taste of Artisan Leave a Comment

I recently made this matcha opera cake for my daughter's birthday. It was a huge success! This cake is much like the original famous opera cake but with a bold matcha flavor and a beautiful matcha color throughout. It's a gorgeous cake and an absolute must-try if you like the flavor of matcha.

Matcha opera cake made with matcha sponge, pistachio buttercream and matcha ganache.

My daughter is a huge matcha fan, and I wanted to impress her. When I saw a picture of this cake in the Japanese Patisserie book, I knew right away - that cake would be the one to make. It turned out fantastic. It wasn't a 'piece of cake' to make, but it was not overly difficult to make either. It was more time-consuming than difficult, but well worth it. If you like challenge and matcha, you must try making this cake at least once. You will be happy that you did.

A few words on the ingredients

This cake needs matcha powder, pistachio paste, yuzu juice, chocolate, and gelatin sheets, other than a few basic ingredients such as sugar, heavy cream, etc. I used grapefruit juice in place of yuzu juice with excellent results. You can also use tangerine or orange juice.

There are different grades of matcha powder, and I find that premium grade matcha, which has less intensity than culinary matcha, is better suited for this delicate cake. Of course, that's a matter of personal taste, and culinary matcha will work great in this dessert. My daughter and I buy matcha and other green teas from Hibiki-An in Japan. We love their selection of teas, their quality of tea, and their lightning-fast shipping.

The chocolate's quality will define the final product's quality, so I highly recommend using better quality chocolate. There are many good brands out there, like Valrhona, Scharffen-Berger, Callebaut, Ghirardelli, etc.

A few words on the matcha cake

You can make the sponges a day ahead and assemble the cake the following day.

The cake, I think, tastes best after a day or two in the fridge, so you can go ahead and make it in advance. Don't trim it until ready to serve.

The glaze will be pretty runny; I let it run down the sides of the cake. What a mess..! But, no problem.

Matcha opera cake glaze.

You will trim it all off before serving, so it's not a big deal. The glaze will also keep all the moisture inside the cake so it won't dry out in the fridge. Don't throw the trimmings away; those seconds but just as tasty.

Birthday matcha and pistachio cake trimmed and ready to serve.

Oh, the cake is rich! I mean, rich! Even a small piece will satisfy you, even if you are a giant cake lover. A small thin slice will do for most eaters.

The cake is tall;  you may find it more practical to serve the slices on the side if you cut them thin.

Enjoy!

Matcha opera cake made with matcha sponge, pistachio buttercream and matcha ganache.

stand mixer with a whisk attachment 2 large 24-cml91⁄2-inch square shallow baking pans, lined with non-stick baking parchment sugar thermometer SERVES 12
Print Pin Rate
Course: Dessert
Cuisine: European, Japanese
Keyword: matcha cake, matcha dessert, matcha opera cake
Prep Time: 3 hours
Cook Time: 15 minutes
Resting time: 1 hour
Total Time: 4 hours 15 minutes
Servings: 16 1 per serving
Calories: 676kcal
Author: Victor

Ingredients

Matcha Sponge

  • 185 g ground almonds
  • 20 g matcha powder
  • 185 g icing sugar
  • 5 egg yolks
  • 40 g all-purpose flour
  • 5 egg whites
  • 25 g granulated sugar
  • 45 g unsalted butter melted

Pistachio Buttercream

  • 180 g granulated sugar
  • 3 egg whites
  • 250 g butter diced and at room temperature
  • 50 g pistachio paste

Matcha Ganache

  • 150 ml heavy cream
  • 8 g matcha powder
  • 300 g white chocolate chopped

Soaking Syrup

  • 125 g granulated sugar
  • 50 ml grapefruit juice you may use yuzu juice to be more authentic if you have access to it, or tangerine, or orange juice.

Pistachio Glaze

  • 100 ml heavy cream
  • 10 g liquid glucose
  • 10 g matcha powder
  • 20 g pistachio paste
  • 2 large sheets or 4 small domestic leaves of gelatine soaked in cold water
  • 270 g white chocolate chopped

For Assembly

  • 100 g bittersweet chocolate
Metric - US Customary

Instructions

To make the matcha sponge

  • Preheat the oven to 350F (180C).
  • Combine the ground almonds, matcha powder, icing/confectioners’ sugar and egg yolks in the bowl of a stand mixer with a whisk attachment (or use a mixing bowl and a hand-held electric whisk). Add the flour and beat until incorporated.
  • In a separate bowl whisk the egg whites to soft peaks using a hand-held electric whisk, then increase the mixing speed and slowly add the sugar, whisking until you have a stiff glossy meringue mixture. Carefully fold this into the matcha mixture followed by the melted butter.
  • Spread the cake batter very evenly onto the two prepared baking pans right to the edges. Bake in the preheated oven for 8–10 minutes until just cooked and a skewer inserted comes out clean.
  • Turn the baking sheets upside-down onto a wire cooling rack and peel off the paper from the bottom of the sponges. Leave to cool on a wire rack until required.

To make the pistachio buttercream

  • Drop the sugar in a saucepan with 65 ml (1/4 cup) water over medium heat with the sugar thermometer inside and bring to the boil. In the meantime, put the egg whites into the bowl of a stand mixer fitted with a whisk attachment.
  • When the temperature of the sugar gets to around 244F (118C), turn the mixer on and start to beat the egg whites.
  • When the temperature of the sugar reaches 250F (121C) and the egg whites have just reached soft peak stage (take care not to overwhip), reduce the speed of the mixer and very carefully pour the hot sugar syrup down the side of the bowl, being careful not to get any syrup onto the whisks or burn yourself.
  • Increase the speed of the mixer and continue to beat the egg whites for 5 minutes until the mixture has cooled to warm.
  • Gradually add the diced butter and mix until fully incorporated.
  • Lastly, add the pistachio paste and mix in well. Cover the buttercream with plastic wrap and refrigerate until required.

To make the matcha ganache

  • Pour the cream in a saucepan with the matcha powder. Stir together and bring to the boil.
  • Remove from the heat and strain the milk through a fine-mesh strainer into another bowl containing the chopped white chocolate. Stir gently until the chocolate has melted to form a smooth ganache. Set aside.

To make the soaking syrup

  • Place all the ingredients in a saucepan with 75 ml (1/3 cup) water and bring just to the boil, stirring to dissolve the sugar. Set aside until required.

To assemble the cake

  • Trim the two sponges into four equal rectangles and put one of the rectangles on a large piece of non-stick baking parchment.
  • Melt the dark/bittersweet chocolate either in the microwave or in a heatproof bowl set over a pan of barely simmering water, making sure the base of the bowl does not touch the water.
  • Using a pastry brush, apply the melted chocolate to the first layer of sponge. Allow this to set firm, then turn over, this will form the base of your opéra.
  • Brush the top of the sponge liberally with the soaking syrup.
  • Using an angled palette knife, next spread over an even layer of pistachio buttercream.
  • Put the second piece of sponge on top, brush with more soaking syrup and then use the palette knife to spread over an even layer of matcha ganache.
  • Put the third piece of sponge on top, brush with syrup and add another layer of buttercream.
  • Add the fourth and final piece of sponge on top and press down lightly with the back of a tray to compress the layers. Brush the top with the remaining melted dark/bittersweet chocolate.
  • Transfer the whole cake to the fridge to set for around 30 minutes; meanwhile make the glaze for the top.

To make the pistachio glaze

  • Combine the cream, liquid glucose, matcha powder and pistachio paste in a saucepan and bring just to the boil. Remove from the heat, squeeze out the excess liquid from the gelatine and stir in. Pour over the white chocolate and stir until melted and combined into a smooth, glossy glaze.
  • Retrieve the cake from the fridge and put on a wire rack over a tray. Pour the warm glaze over the top of the dessert. Smooth over with a palette knife/metal spatula to achieve a nice clean finish and return to the fridge for 20 minutes for the glaze to set.

Serving

  • Trim away the edges of the opera using a serrated knife warmed in a jug/pitcher of hot water. You can then serve the cake whole or cut into neat slices.

Nutrition

Calories: 676kcal | Carbohydrates: 64g | Protein: 11g | Fat: 44g | Saturated Fat: 23g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 15g | Trans Fat: 1g | Cholesterol: 126mg | Sodium: 167mg | Potassium: 325mg | Fiber: 3g | Sugar: 58g | Vitamin A: 924IU | Vitamin C: 1mg | Calcium: 135mg | Iron: 2mg

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