
Enjoy this easy and delicious green tea opera recipe. A moist, light and creamy cake where the slight bitterness of green tea tempers the sweetness of white chocolate.
History of the Opera Cake
The Opera Cake was first created by a French known as Louis Clichy, who called it… Clichy.
It was a very refined and decadent layer cake prepared with:
- delicate almond biscuit or joconde,
- chocolate ganache,
- coffee buttercream, and
- chocolate glaze.
The cake got popularized by the Parisian pâtisserie Dalloyau as "Opera Cake", as it is known today.
Highest quality Matcha

Highest quality Matcha powder or green tea powder is Japan’s most widely known tea. It’s also used to flavour and dye foods like:
- green tea ice cream
- mochi and soba noodles, and
- a variety of wagashi - Japanese confectionery-.
Highest quality Matcha differs from standard green tea well before it has even been plucked.

The tea from which Starbucks matcha powder - and all other matcha powder - is made, is grown under shade. This causes the growth of the green tea to slow down to:
- ensure tender tea leaves and most importantly
- maximum chlorophyll which causes the deep green colour in the final green tea powder.
The leaves are then plucked and processed into steamed tea. This tea will then be milled into a very fine green powder making matcha green tea so distinctive.
Matcha is generally expensive compared to other forms of tea, that’s why we want to share with you the secret recipe of making your own distinctive green tea.
Green Tea Opera Cake Recipe
Making White Chocolate Glaze
Top your green tea opera cake with this simple white chocolate glaze:
- 1/4 cup (60 ml) heavy cream
- 3 ounces (90g) chopped white chocolate
Simply melt the chocolate into the heavy cream in a double boiler. Let cool (for 10 minutes) and pour over the top of your green tea opera cake.
Making the green tea cake
- 1 cup (120 g) ground almonds
- 1 cup (100 g) sifted icing sugar
- 1/4 cup (30 g) all-purpose flour
- whites of 3 large eggs at room temperature
- 3 large eggs
- 1 tablespoon matcha
- 1 tablespoon granulated sugar
- 1 1/2 (22.5g) tablespoon unsalted butter
Preparing the green tea cake:
- Line a 12 1/2 inch by 15 1/2 inch (about 30 x 40 cm) jelly roll pan with parchment and grease with butter
- Beat the egg whites in a bowl until they form soft peaks. Add sugar and beat again until the peaks are stiff and glossy.
- Beat icing sugar, matcha, almonds and eggs in another bowl until light and voluminous. Add the flour and beat until the flour is just combined.
- Fold the egg white mixture into the almond mixture.
- Fold in the butter.
- Pour the batter into the pan.
- Bake the green tea cake in a preheated 425F - 220C oven until lightly browned and just springy to the touch, about 5-9 minutes. As always, don’t use hot air for baking cakes.
- Run a knife along the edges to loosen the cake form the jelly roll pan.
- Cover the cake with parchment paper, flip and un-mold your green cake.
- Peel of the parchments paper flip and cover the green cake while it cools.
Making Green Tea Buttercream
The secret to make any good buttercream is beating and beating more. The green color comes again from green tea matcha powder.
- 2 large egg whites
- 3/4 cup (180g) unsalted butter at room temperature
- 1/2 (100g) cup sugar
- 1 tablespoon matcha
- Mix the sugar with the green tea matcha powder in a small bowl
- Whisk the sugar and matcha into the egg whites in a bowl over a pan of simmering water until the mixture is hot to the touch, about 3 minutes. Make sure the sugar gets dissolved and the mixture looks like shiny marshmallow cream
- Remove the bowl from the heat and beat until the cream is cool, about 5 minutes.
- Beat in the butter
- Beat the mixture until it thickens and becomes smooth, about 5-20 minutes.
Making the Green Tea Syrup
This is a simple syrup with some added flavour from green tea liquor. Green tea liqueur has a nice dark green color and adds a nice aroma to the syrup and the opera cake.
- 1/4 cup (62.5ml) water
- 1/4 cup (50g) granulated sugar
- 1 tablespoon green tea liqueur
Making the green tea syrup is easy: bring all ingredients to a boil in a small sauce pan stirring until the sugar is dissolved. Remove from heat and let cool.
Making White Chocolate Ganache
When too liquid to keep the ganache from streaming out of your cake: put this white chocolate ganache in the fridge before using it in your green tea opera cake.
- 7 ounces (200g) chopped white chocolate
- 1/4 cup (60ml) heavy cream
- 1/4 cup (60g) butter
- 2 tablespoon heavy cream
- Melt the chocolate into the butter and 2 tablespoons of heavy cream in a double boiler.
- Set the ganache aside and let cool completely.
- Whip the 1/4 cup heavy cream in a large bowl.
- Fold the whipped cream into the chocolate ganache.
- Refrigerate until used.
Putting the green tea opera cake together
Assembling the cake on a baking sheet lined with parchment paper like so:
- Cut the cake into 4 pieces (6×7 inch or 15×20cm)
- Place 1 sheet of the cake onto the baking sheet and moisten with your green tea syrup.
- Spread 1/2 of the buttercream over the cake.
- Place 1 sheet of the cake on top of the buttercream and moisten again with syrup.
- Spread the white chocolate ganache over the cake.
- Place 1 sheet of the cake on top of the ganache and moisten with syrup.
- Spread the remaining buttercream over the cake.
- Place 1 sheet of the cake on top of the buttercream and moisten with syrup.
- Pour the glaze over the cake and smooth it out.
Refrigerate until it sets, about 30 minutes. Trim the sides to get a smooth finished green tea opera cake! Job well done
