Coca~Cola Cake

I was in Atlanta recently, where Coca~Cola has its headquarters. Needless to say that it is everywhere and used for anything so why not a cake? The old fashioned southern recipe from Georgia requires “full fat” coke, the locals might even say “is there anything else?” and I did comply…. I haven’t bought that version in soooo many years! And a lot of sugar, that’s where I drew the line, I just couldn’t put the amount stated…. a healthier version it is and it tasted wonderful! It also came right on cue for another birthday treat: I didn’t fancy making anything complicated, organising the party is tiring enough. The cake is actually best done the day before, so the icing can sip into the cake overnight…

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Ingredients:

For the cake:

  • 125ml buttermilk
  • 225g/ 8oz butter (it can be half flavourless oil)
  • 50g/ 2oz cocoa powder
  • 250ml Coca~Cola
  • 255g/ 9oz flour
  • 255g/ 9oz sugar, only! I would even reduce that next time to 200…. {original: 350g}
  • 1 tsp bicarbonate soda
  • ½ tsp salt
  • sprinkle of ground vanilla *optional
  • 2 large eggs
  • 1 tsp vanilla extract

For the Coca~Cola frosting (what did you expect?)

  • 115g butter
  • 80ml Coca~Cola
  • 25g/ 1oz cocoa powder
  • 280g icing sugar
  • ½ tsp of coke extract ( if not available, use vanilla)

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Preparation:

The cake:

  • Prepare a rectangular 33x23cm/ 13×9″ baking tin with butter and flour or greaseproof paper
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My brownie pan was not deep enough as slightly smaller, it needs to be at least 5cm/ 2″

  • As usual, I need to address the lack of buttermilk in France first: add a tsp lemon juice to 125ml of semi or full fat milk, at room temperature and leave for 10mn
  • In a pan, over medium heat, melt the butter. Add the cocoa, stirring constantly, then the coke
  • Bring to the boil and whisk for 5mn then set aside

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  • Preheat oven to 180°C/160°fan/ Gas 4
  • In a large bowl, sift together the flour, the baking soda and the salt. Whisk in the sugar ( I used dark brown) and the ground vanilla if used

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  • Gradually, mix in the coke mixture

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  • To the buttermilk add both eggs and vanilla extract and stir into the batter in 3 or 4 batches until well combined

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  • For the purists: at this stage in Atlanta, one adds 2 cups of mini marshmallows to the batter, which disappears in the baking… I had 1 cup in my pantry so I did…

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  • Pour the batter in the tin and bake for 30 to 40mn (should have been 30mn but it took longer so check your oven) until your testing needle comes out clean

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The Frosting:

Cannot be done whilst waiting but once you take cake out of the oven….

  • Sift the icing sugar in a bowl
  • Melt butter in a pan over medium heat then add cocoa and coke. Stirring constantly bring to the boil. Remove from the heat and add extract if used
  • Add to the icing sugar, whisking until smooth and glossy

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  • Pour all over the cake, filling all the gaps but never using a spatula, if you want to keep the shine
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I cut the top of my cake as I needed it to be flat for my birthday icing topper

  • Let it cool overnight, in a sealed container or can be kept longer in the fridge but it won’t last that long!

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*** On a personal note: the coke flavour is particularly stronger in the frosting and it tasted very sweet. The cake is definitely a keeper as it rose so well, is a bit different than the usual chocolate cake and benefits from being done the day before to allow the flavour to develop…. Next time, I would probably ice it with my usual chocolate buttercream or ganache!

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