Saturday, February 14, 2009

Opera Cake Part I: Preparation

Damn it. I'm making opera cake.

This is one of those things I've been wanting to do, and putting off, for some time now, about 14 months. Making an opera cake always seems like it will required more shopping, preparation, and concentration than I have time or patience for, and I just keep saying, "Maybe next month."

But today is economic stimulus day. I just got my federal tax refund, and I want to celebrate by doing some baking and buying some things for my kitchen.

First, I need a recipe. There's one from a la Cuisine that I've had my eye on.

Next, I'll need some equipment. Although I own a half sheet pan, it doesn't properly fit in my oven, which is pint-sized. I use it all the time anyway, sliding it in at a tipped angle. This works well enough when baking cookies because they stick to the Silpat mat, but if I tried to bake a cake like this, all the batter would run off.

So I'll need a pan. I know opera cake is traditionally made in rectangles, but maybe I'll buy a spring form pan and make a round cake instead. I was inspired by this cake, which that shows you can achieve very thin cake layers in a round spring form pan.

I also need an offset spatula.

Third, I need to go to the grocery store and buy almond flour, eggs, butter, heavy cream, and a few more ounces of dark chocolate (I have a bar of Green and Black's 70% in my cupboard). I'll be using organic free-range eggs, which are almost twice as expensive as non-organic caged eggs, but worth it. They are far superior.

Finally, I need aspirations. I'm the kind of person who learns best when I see someone else model a behavior or technique. In this case, I've been looking for images of both the process and the final product.

The ultimate aspiration is to have it look like this:



On the other hand, I'll kill myself if it looks like this:



And I'll settle for something like this, a picture I found on someone's blog taken while she was traveling in Vietnam:



I have a minor obsession with wanting to go to Vietnam for the food and culture, and now that I know there is opera cake there, well, it's on my agenda! Hopefully I can get there faster than I can make an opera cake (14 months in the planning).

The Recipe (from a la Cuisine)
Joconde
4 tbsps (60g) unsalted butter, melted
6 large egg whites, at room temperature
2 tbsps (30g) granulated sugar
2 cups (225g) almond flour or finely ground almonds
2 cups (225g) icing sugar, sifted
6 large eggs
1/2 cup (70g) all-purpose flour

Coffee Syrup
1/2 cup (125g) water
1/3 cup (65g) granulated sugar
1 1/2 tbsps (7g) instant coffee powder

Coffee Buttercream
2 tbsps (10g) instant coffee powder
2 tbsps (15g) boiling water
1 large egg
1 large egg yolk
1 cup (100g) sugar
1/4 cup (60g) water
1/2 tsp pure vanilla extract
14 tbsps (200g) unsalted butter, at room temperature

Ganache
8 oz (240g) bittersweet chocolate (70% +), finely chopped
1/2 cup (125g) whole milk
1/4 cup (60g) heavy cream
4 tbsps (60g) unsalted butter, at room temperature


Read the other posts in this series:
Opera Cake Part I: Preparation (current page)
Opera Cake Part II: Cakes
Opera Cake Part III: Fillings



3 comments:

hreeves said...

Sneak peak at part IV: IT WAS DELICIOUS!!! Also, I think you managed to get somewhere in between idol cake and vietnam cake. THANKS, JILL!!

Anonymous said...

yes I used to eat this opera cake in Vietnam and now I miss it so much and decide to learn to make it. Thanks 4 the recipe.
yOU should really go to Vietnam it's a fantastic country for holiday. Just back from it about two months and planning to go again next summer.

Jill E. Duffy said...

Vietnam is one of the countries I most want to visit! Earlier rigs year (it's 2010 as I'm writing this comment), I went to Thailand and Makaysia, so I got closer at least!

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