Banana L’Opera 香蕉欧培拉蛋糕


Banan L'opera

by sivia

I wanted to try second time of opera and the banana concept is the key from one of my readers here(U know who u r :P, thank you so much) I wanted to do it from how she told me: Strong banana and chocolate flavour,less on the coffee(unlike the classic one).I am aiming to reduce the sweetness by adding less buttercream onto this cake,but it still taste very delish!Here you go~

Opera cake 2

by Sivia


Few components:

  • Banana Joconde
  • Coffee(Decaf) syrup
  • Coffee(Decaf) buttercream
  • Banana buttercream
  • Dark Chocolate Ganache Filling
  • Dark Chocolate Glaze


  •  chocolate banana Opera 3

Banana Joconde:

  • 63g almond powder
  • 63g icing sugar
  • 18g cake flour
  • 85g eggs
  • 1 ripen banana, mashed
  • 80g egg whites
  • 16g castor sugar
  • 18g Western Star unsalted butter ( or any unsalted butter)

Banana Joconde


1)Preheat oven to 200c.Line baking paper onto a 30cmX30cm baking tray.

2)Sift almond powder, icing sugar and cake flours.Set aside.

3)In a mixing bowl: beat eggs until ribbon stage(a), fold in the almond-icing-flour mixture and banana mashed.(Do not over mix)

4)In another clean mixing bowl: Beat egg white till foamy stage, slowly add in sugar and continued beating till stiff peak achieved.

5)Fold in 1/3 of meringue(b) into the egg-flour mixture to ligthen it.Then, fold in the remaining meringue.(Do not over mix otherwise deflate the air bubbles)

6)Pour in the melted butter and mix to just well combined.

7)Bake at 200C for 8-15 minutes,or to light golden brown,depending on individual oven.



(a)Ribbon stage? Aerated of eggs with sugar by whisking it. As you lift the egg mixture, it will fall back on itself and a trail of “ribbon” will be left across the surface. The ribbon will hold shape for a moment and then sink back into the mixture.

 (b)what is meringue? Meringue means  egg whites and castor sugar are beaten to airy texture with alot of air pockets trapped inside.Usually to double or tripled of volume.

 Simple  Coffee Syrup (Decaffeinated)


Simple coffee syrup


Italian Buttercream:

  • 1/2 cup sugar
  • 30ml water
  • 2 egg whites
  • 225g Western Star butter,unsalted(room temperature) or any unsalted butter


1)Combine water and sugar in a saucepan over medium heat.Bring it to boil. Once it starts boiling, insert a candy thermometer.

2)Standby your butter cubes on other side.

3)Whip egg whites in mixing bowl of a mixer to soft peaks, at medium-high speed. (Goal: egg whites whipped to soft peaks by the time sugar reaches 112C.)

4)When sugar reaches 112C, add it to egg whites in a slow steady stream on medium speed. (Careful: Pour sugar directly into egg white without hitting edge or side of bowls or beater)

5)Increase speed to high and beat until cooled to room temperature. ( Test with thermometer if cooled meringue is at or lower than 35C.)

6)Reduce mixer speed to medium, start adding butter ,one at a time. Mix well and be patient.

7)When all butter has been added, continued beating at high speed until incorporated or a completely smooth buttercream is obtained.


italian meringue buttercream


(a)Do not panic if you see curdled during the stage where adding butter, keep beating at high speed ,you will see it comes back together and become smooth.

(b)Ensure you butter is cut into small cubes and it is in room temperature, not too soft and not firm to touch. When you touch it, it leaves a soft dent on the butter.

(c)If your kitchen happen to be hot, you can use a bowl of cold ice sits underneath the italian meringue while adding your butter into. It helps to prevent butter to split due to  the heat from italian meringue.


From Italian Meringue buttercream we prepared, we make into 2 different flavours:


a)Decaf Coffee Buttercream:

  • 2/3 of italian buttercream(prepared above)
  • few tsp of the decaf coffee syrup(prepared earlier)

1)Whip all these together to get a smooth decaf coffee buttercream.


b)Banana Buttercream:

1 ripen banana,mashed(or few drops of banana essence)

1/3 of italian buttercream(Prepared ealier)

1)whip all together to get a smooth banana buttercream.(notice: using banana mashed will see chunks of banana puree,it is ok.If want to avoid it,use banana essence)

Dark Chocolate Ganache Filling:


Dark chocolate filling

Dark Chocolate Glaze:


Dark chocolate glaze

Another version of Chocolate glacage:

  • 260g  Bulla whipping cream ( or any whipping cream)
  • 180g sugar
  • 60g Hershey unsweetened cocoa powder ( or any cocoa powder)
  • 6g gelatine leaves
  • 30g water (use to soak the gelatine)

1)in a pot:add in cream, sugar, cocoa powder(sifted),keep cooking and strring under medium heat.

2)After the mixture came to boil and cocoa powder has dissolved.Remove from heat.

3)add in the soaked gelatine sheet(discard the water),stir till dissolved.

4)Strain the mixture and allow to cool to room temperature.Stirring occasionally to avoid skin form.



chocolate banana Opera 4





1)Cut the banana joconde into 3 equal parts.

2)Brush Decaf coffee syrup onto the first joconde.

3)Spread decaf coffee buttercream then spread the chocolate ganache.

4)Add 2nd layer joconde.

5)Brush with syrup,then spread banana buttercream.

6)Spread chocolate ganache.

7)Layer the last joconde,brush syrup.

8)Spread decaf coffee buttercream.

9)Set inside the fridge to chill for few hours till buttercream has harden.

10)Remove cake from fridge,warm up the chocolate glaze if harden.

11)Pour the chooclate galze on top of the buttercream layer.(Dont worry to run over the edges)

12)Trim the 4 sides.Set in fridge for 30 minutes.

13)Decorate how ever u like.Slice and serve.

Banana chocolate Opera assemble


chocolate banana opera assemble2




1)Since no added colouring,I suggest to eat this cake fresh,not to keep too many days because of the added fresh banana in buttercream. 🙂

2)If you prefer stronger coffee flavour,welcome to add more into your syrup(coffee essence also can be used,but I tried to keep everything natural)

3)Dear friends,if you prefer sweeter ,double the recipe for the buttercream. As you can see from my buttercream layers,it consists of 2 layers decaf coffee buttercream & 1 layer banana buttercream 🙂

chocolate banana Opera 6

by Sivia

chocolate banana Opera 5

by Sivia


Sometimes,life is so full of unspeakable series that we never expect.I want to dedicate this cake for my love one,my only husband:” You’ve been so tired these days.You’ve become much stronger from all the things we have been through. I love you today and everyday.Thank you.”


Happy Trying 🙂


Opera Swiss Roll for Valentine 欧培拉蛋卷

opera swiss roll4

Opera cake  is a French type of cake. It is made with layers of almond sponge cake (known as Joconde in French) soaked in coffee syrup, layered with chocolate ganache and coffee buttercream and covered in a chocolate glaze.

For those who loves coffee and chocolate, Opera cake would be highly recommended to you.

What about turning Classic Opera cake into a simple swiss roll instead for this Valentines?

May all of my friends here have a wonderful Valentines with your loved one.

Valentines is not just celebration between 2 love birds, it is a day to give all your love to your loved one, your beautiful friends and family.

Happy Valentines Day everyone~

opers swiss roll3

Yields two small size swiss rolls

Few components you need:

  • Joconde sponge

  • Coffee Italian Meringue Buttercream ( decaffeinated version)

  • Chocolate glaze

Opera swiss roll

opera swiss roll5

Joconde Sponge:

  • 30g oil
  • 90g almond flour
  • 45g icing sugar
  • 180g whole eggs
  • 150g egg whites
  • 90g castor sugar
  • 75g cake flour

1)      Sift the almond flour and icing sugar together. Lightly beat the whole eggs.

2)      Mix the almond mixture into beaten eggs to well combine. Fold in oil. Mix well.

3)      Beat egg whites and sugar in a clean mixing bowl to foamy stage, slowly add in sugar and  continued beating to reach soft peaks.

4)      Fold in 1/3 of meringue from step (3) into flour mixture from step (2). Fold in the remaining meringue in 2 additions. (remember do not over folding otherwise deflating the air pockets in the egg whites.)

5)      Pour the batter into a 10” X 14” baking tray with lined baking paper.

6)      Bake batter in preheat oven of 180C for 15 minutes or 170C for 25minutes, depending on individual oven.

7)      Once baked, lay the golden brown side onto a new sheet of baking paper.  Peel off the baking paper from the joconde. Let it cool completely.



(a) What is joconde?

A Joconde Cake is cross between a biscuit and sponge cake. It has an almond flavor and was named for Mona Lisa which translates to La Joconda in French.

how to make joconde joconde 2

Coffee Italian Meringue Buttercream:

  • 190g  Western Star butter, unsalted ( or any unsalted butter )
  • 80g castor sugar
  • 40g water
  • 80g egg whites
  • 16g castor sugar
  • 1.5 tsp coffee powder (or  decaffeinated  coffee  granules, I used Nespresso decaf coffee capsule)
  • I tbsp hot water

1)      Mix coffee granules with 1 tbsp hot water until dissolved. Set aside.

2)      Bring butter to room temperature (when you touch the butter, it leaves a dent easily but not melting)

3)      In a pot:  heat water and 80g castor sugar on high heat until sugar dissolved. The aim is to cook the sugar syrup to reach 118C-120C.

4)      Meanwhile, beat egg whites to bubble stage, slowly add in 16g sugar and continued beating to reach soft peak.

5)      Once sugar syrup reached 118C, switch off heat and wait till bubbles disappear. While motor still running slowly on the egg whites, slowly pour in the sugar syrup into meringue from step (3). Beat it until the meringue has cooled down inside the bowl. (Touch the bottom of mixing bowl if it is completely cool down.)

6)      Once meringue has cooled down completely, throw in cubed butter one by one. Beat until the Italian meringue buttercream comes  together.

7)      Fold in coffee syrup and beat until well incorporated.

coffee italian meringue buttercream

Assemble 1:

1)      Spread the the buttercream onto the swiss roll. Slice into half. Now you have two slices of joconde.

2)       Ensure baking paper is sitting underneath the roll. Roll into a good roll with the help of rolling pin. Seal the baking paper, and cover with another layer of aluminium foil for double secure.

3)      Repeat this step for another slice of the swiss roll. Place them into refrigerator for 4 hours. Now you can have two swiss rolls.


Chocolate Glacage/glaze:

  • 30g Western Star unsalted butter ( or any unsalted butter )
  • 100g  Cadbury baking dark chocolate button ( or any baking dark chocolate)
  • 100g Bulla cream ( or any dairy cream)
  • 50g Liddells lactose free milk ( or any fresh milk) milk
  • 3 gelatin leaves ( add if you can find) soak in cold water until soften.

1)      Heat up cream and milk on low heat. Switch off heat once just come to boil.

2)      Pour the hot cream mixture into chocolate. Mix well until all chocolate has melted.

3)      Fold in softened butter. Mix well and fold in soften gelatin leave. Mix well. Strain the glaze.

4)      Let it cool down to room temperature. Stir well every now and then.

OR    heat up cream , milk and chocolate together until all well combined. Then fold in butter. Mix well then fold in soften gelatin leave. Strain.


Assemble 2:

1)       Remove roll out, and spread the coffee buttercream on top of the swiss roll. Smooth out nicely with a spatula. Place back into refrigerator to allow the buttercream  for 1-2 hours to set.

2)      Remove the swiss rolls out from refrigerator and place onto a cooling rack. Pour the chocolate glaze over the two rolls evenly.

3)      Allow the excess chocolate glaze to drip down.

4)      Place the rolls back to refrigerator for 30 minutes to set properly.

5)      Take out the roll and trim off the both ends to see all the distinctive layers. Place back into refrigerator for 30 minutes to set little bit more.Slice and serve.


glazing swiss roll

opera swiss roll2

opera swiss roll 6


  1. Ensure the eggs have to be cold.
  2. Ensure the butter to be added slowly to a completely cooled meringue. Do not panic if see butter and meringue curdled, just keep beating longer until all comes together.
  3. You can use either  coffee granules or decaffeinated coffee.
  4. Ensure to strain the chocolate glaze to get a smooth glaze.
  5. Remember to stir the glaze every now and then to avoid the top skin formed.
  6. If you want your swiss roll to be flavoured with more coffee, you can brush some coffee syrup (1 tsp coffee powder mix with 1 tbsp hot water) onto the joconde sponge.
  7. Chocolate glaze will only looks shiny glossy when roll first coated with glaze  at room temperature. Once store in refrigerator,it will lose it shine and it is okay. Chocolate glaze for the Opera supposed not to be shiny for consumption due to the contents of the glaze to make as such for better taste and texture. Shiny chocolate glaze gives good appearance for the cake but lack of good flavour as a glaze for the Opera.Enjoy everyone~ ^_^

valentine's day decorations ideas (