Monday, November 7, 2016

Opera Cake: Homemade classic cake

 The first time that I made the Opera cake is about 7 years ago, that time I made pistachio opera cake.


I'm not a professional trained chef, I just love to make all the things that I (and my family) want to eat ^^, it's the only reason that I keep on cooking and baking. And every times that I make traditional recipe, I try to simplify it so everyone who love to bake at home like me, can create it at home too. 
This time, I got a request, a classic opera cake, the one with simple flavor of chocolate and coffee. I really recommend you to use the chocolate that you love to eat, this time I use 66% chocolate, as I don't want it to be too bitter or too sweet. You can use the higher or lower percentage of chocolate but please remember that with higher one, the ganache will be firmer.
Three layers of Joconde biscuit with coffee buttercream, chocolate ganache, and chocolate glaze. The first time that I made the Joconde biscuit, I made a mistake by baking it too long, so if you never made it before try baking it until set not dry ^^". You can check by touching it lightly and it will spring back, the time that I give is only a guide, mine is only 8 minutes. I think one of the easy point of this cake is, you will trim it into desired pieces, so you don't have to worry much about the glaze, hehe. Just make sure that the top of the cake is smooth as you will trim all the side anyway, easy, right?
Other parts of the cake is simple, it's not hard to make but it takes time so prepare it one day before you planing to serve it.


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 Opera cake
Make 7-8 pieces 


Joconde Biscuit
use 26x36cm sheet pan

100g ............................ Almond powder
76g .............................. Icing sugar
96g .............................. Egg
19g ............................... Cake flour

Meringue
-90g ............................. Egg whites
-20g ............................. Sugar
........................................ Pinch of salt

16g ............................... Unsalted butter, melted

Filling ganache
65g .............................. Dark chocolate (I use 66%)
60g .............................. Whipping cream
8g................................. Golden syrup (or Honey or invert sugar)
10g .............................. Unsalted butter


Coffee butter cream
96g .................................. Eggs
35g .................................. Water
125g ................................ Sugar
190g ............................... Unsalted butter
........................................ Pinch of salt
1 tbsp ............................. Coffee liquor
2tsp ................................ Instant coffee granules

Base chocolate
55g ............................ Dark chocolate  (I use 66%)
6g ............................... Rice bran oil 

Coffee syrup
55g ............................ Sugar
110g ............................ Water
1 tbsp ......................... Coffee liquor
1/2 tsp ......................... Instant coffee granules



Chocolate glaze
44g ............................... Milk
20g ............................... Glucose syrup
30g ............................... Whipping cream
20g ............................... Sugar
100g ............................. Coating chocolate
34g ................................ Dark chocolate


Start by making the Joconde:

Preheat the oven to 200 °C line the pan with baking paper.

 Sift almond, icing sugar and flour into a bowl.


 Pour the eggs into the bowl.


 Mix to combine.
Beat the egg white with a pinch of salt until foamy, add the sugar gradually and beat until firm peaks formed.
Fold into the almond bowl, in 2-3 addition.


 Pour the melted butter into the bowl.


 Fold to combine.


 Pour into the prepared pan and bake for 8- 15 minutes, and let it cool completely before using.

Make the coffee buttercream:
 Put the water and sugar into a saucepan, and place over medium heat.
Heat until the temperature reach 115C.
Meanwhile beat the eggs until thicken.


 Pour the hot syrup slowly into the the egg bowl, beat all the time.


 Beat until thick and cool.


 Mix the coffee liquor and instant coffee granules together.


 Pour into the bowl with a pinch of salt.


 Beat until smooth.


 Cut the biscuit into 3 pieces.


 Make the base chocolate by put both chocolate and oil into a bowl, and place it over hot water. Stir until melt.


 Brush it over 1 piece of the biscuit.
Refrigerate until firm.


 Make the syrup by boiling the sugar and water together.
Remove from the heat and mix in the coffee liquor and instant coffee granules.
Let it cool before using.


 Make the filling ganache by putting the chocolate into a bowl, and place it over hot water.
stir until melt.


 Warm the whipping cream until 50C.
Pour into a bowl with butter and golden syrup.


 Stir to combine, let it firm up before using.

Assemble;
 When the chocolate on the base is harden, flip the cake right side up and sprinkle with syrup. 
Spread the buttercream over the cake, then place another sheet of cake and sprinkle with the syrup. 
Spread the filling ganache over the cake, then place another sheet of cake and sprinkle with the syrup. Put the cake into the fridge until the ganache harden.
Spread the buttercream over the cake.

Then put the cake into the fridge until the buttercream harden.

Making the chocolate glaze:
 Bring to boil all the ingredients except both kinds of chocolate, then pour it over the chocolate and stir until combine. Let it cool.
Let it cool to room temperature before using.
  Pour the chocolate glaze over the buttercream, then return the cake to the fridge.

When the chocolate glaze firm, trim the cake and cut into desired pieces.
Decorate before serving.


Opera Cake: Homemade classic cake

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