How to: make a ruby-shaped cake for your own Rails Workshop

Along with our coaches, the ruby-shaped cake was the star of our Rails Bridge & Rails Girls Berlin workshop. If you want to get yours, it’s way easier than it looks like. Our Fanny tells you how:

Der Star des letzten Workshops.

Time needed: 1-3 hours, depending on how experienced you are

Here is the recipe:

My cake was a chocolate cake with a white chocolate frosting and a homemade natural strawberry jelly, but basically, you can do it with your favorite cake too. But I really like this basic recipe, because it’s sooo easy and fast.

This recipe is for one regular cake, but I needed two (i.e. one cake baked in a 32 x 28cm baking pan), because we were ca. 60 people, but obviously, it works with just one cake, you’ll just need to use a smaller baking pan.

Please note that your cake will eventually be smaller than the baking pan, because you’ll have to cut some parts to give the ruby-shape to it.


Chocolate cake: 5 eggs, 1 cup sugar (~15g), 1 cup white flour (~15g), 1/2 pack baking powder (~5,5g), 1 pack vanilla sugar (~10g), 180g dark chocolate, 50g butter

Frosting: 200g white chocolate (I used frosting chocolate), some chocolate sticks (i.e. Mikado), 50g almonds, 250g strawberries, jam sugar/preserving sugar (I used this amazing thing)

STEP 1: bake the cake

Preheat the oven to 180°C (350°F).

In a bowl, combine and stir the eggs and the sugar. Add the flour and mix slowly. Add the backing powder, the vanilla sugar and stir till having a smooth mixture.

In a small bowl, melt the butter and the chocolate (I did it in the microwave). Pour the mixture into the dough.

Place some pieces of parchment paper in your backing pan and pour the mixture into it.

If you’re doing the bigger version with two cakes, do STEP 1 once again and pour your mixture into the first one in your baking pan.

Bake for 30 min. As soon as you can insert a toothpick and it comes out clean, it needs to come out the oven.

Let the pan cool on a rack for 10 minutes.

Invert onto a rack and remove the parchment paper carefully. Gently turn the cake right side up. I highly suggest to put it on the plate/dish you want to use to carry/serve it at this moment.

STEP 2: make the cake look like amazing 

Use a sharp knife and start giving your cake a ruby-shape. If you made the bigger version, you’ll have to cut out approx. 1/3 of the cake. (Leftovers are much appreciated from flatmates as breakfast pastries).

Melt 200g white chocolate and pour it onto the cake, not forgetting to frost the sides too. Keep approx. 50g melt white chocolate for the writings.

Put some almonds on the sides.

Put some laying chocolate sticks (e.g. Mikados) following the shape, they will help the strawberry jelly on the top not to run down. Don’t forget to cut the non-chocolate parts away.

Cut the strawberries and mix them with the jam sugar and heat it till it gets thicker (if you use the magic product I did, you won’t even have to heat the mixture at all). Pour it onto the cake slowly.

Let the cake cool at least for 10 minutes.

In the mean time, write on a piece of paper whatever you want to have written on your cake, using quite big letters. Try to have each word as one part, if will be easier to put it onto the cake this way.

Put the piece of paper in a punched pocket. Use the melt chocolate re-writting the words and put it for 15min in the freezer.

After that, remove the writings from the punched pocket and place them onto the cake.

You can add some sparkles or stars to the cake to make it look more girly.

Next time: How to: make a unicorn-shaped cake 😉