Hominid spongyform encephalophagy: cooking time 1-11/2 hours, difficulty ***BMJ 2015; 351 doi: http://dx.doi.org/10.1136/bmj.h6310 (Published 14 December 2015) Cite this as: BMJ 2015;351:h6310
- Lucinda Whitton, senior house officer1
- Correspondence to:
- Accepted 25 October 2015
With shows such as “The Great British Bake Off” captivating the nation, baking has taken Britain by storm. This article shows you how to make a “brain cake”—from the core sponge to the basal layer and gyri. Not only is it “radiculously” tasty, it will get your neurones firing as you fight with the intricacies of the anatomy. So find the mixing bowl and conjure up your culinary creativeness this Christmas. Food for thought indeed.
Step 1: The sponge
A simple Victoria sponge recipe will do the trick. Spherical baking trays are available from specialist kitchen shops but ovenproof bowls lined with greaseproof paper can be used instead.
Preheat the oven to 180ºC. Butter two spherical baking trays or ovenproof bowls and line with greaseproof paper.
Mix all ingredients in a large bowl until smooth. Divide the mixture between the two spherical bowls and one small cupcake baking tray (to make the cerebellum).
Cook for 20-25 minutes until the cake is golden and bounces back when pressed down. Allow to cool while preparing the icing.
200 g each of self raising flour, caster sugar, and unsalted butter, softened
4 medium eggs, beaten
1 tsp baking powder
3 tbsp milk
150 g unsalted butter, softened
210 g icing sugar, sifted
½ tsp vanilla extract
Jar of good quality seeded jam
1 kg packet of ready to roll white icing
Yellow and red food colouring
Apricot jam, boiled (optional)
2 cocktail sticks
Step 2: Icing
Achieving the brain colour is one of the most difficult parts of making the brain cake. Good quality food colouring makes this easier.
Dividing the fondant into two halves at the beginning means you can dilute the intensity of the colour or start again if it goes disastrously wrong. Use the best colour for the top layer of icing: the gyri.
Step 3: Brain substance
For the butter icing, put the butter, icing sugar, and vanilla extract into a mixing bowl. Use a wide paddled whisk to achieve a smooth consistency.
Once both sponges are completely cooled, spread a layer of butter icing on top of one with a palate knife. Next, spread a thin layer of jam.
Place the second sponge on top of the base sponge. Apply a layer of butter icing and jam to the top of the cake.
Step 4: Hemispheres
To achieve the definition of the hemispheres use a sharp knife to cut around the cake to leave two crescent shaped sponge pieces.
Next, position the crescent shaped sponge pieces on top of the cake so that the filling layer is visible from above and the two shapes have straight ridges next to each other. In this way the hemispheres are formed.
Step 5: Basal layer
Apply a base layer of icing to cement the brain cake together.
At this point, you can cover the entire cake in boiled jam to aid adhesion, but I find everything is sticky enough without.
Sprinkle icing sugar over the rolling pin and kitchen surface, then roll half the icing into a thin, even layer, about 3 mm thick.
Lift the rolled out icing over your cake using the rolling pin. Once applied, use a sharp knife to trim excess icing from around the cake. Add the excess icing to the remaining half.
Apply slight pressure to the top of the cake where a natural dip should have formed to create the hemispheres.
Step 6: The cerebellum
Take the sponge cupcake and apply a layer of butter icing and jam. Use a sharp knife to trim the cupcake if it’s too big.
Next, apply a thin layer of icing all over the cupcake.
Identify the occipital lobe of the brain cake and, using a sharp knife, cut an indent into the lobe for the cerebellum. Place two cocktail sticks into the cerebellum. Lift the brain cake so that the cerebellum slots into the space and the cocktail sticks secure the cerebellum to the main cake.
Step 7: Gyri
This step is the most important in terms of the cake’s overall appearance and can be as anatomically correct as you like, depending on the time available and your patience.
To create basic gyri and sulci, roll small pieces of icing into even sausages. Starting at the hemisphere, fold up the “icing sausage” to create the gyri. The “sausage” should adhere to the base layer of icing, but if it doesn’t knead it more before placing on the cake or use a small brush with cold water to cement the underside.
Continue with this process until the entire cake, excluding the cerebellum, is covered. Never cross the ridge of the hemispheres with gyri.
Step 8: Fiddly folium
This step is the most difficult and requires the most patience. Use the same method as used to create the gyri but roll out the sausages very thinly—about 3 mm in diameter.
Layer horizontally until the entire cerebellum has been covered. To create the cerebellar vermis, use a cocktail stick to carefully apply pressure in the midline.
Step 9: Dissection
After taking several pictures and admiring your hard work, use a sharp kitchen knife to dissect the finished product. Coronal or sagittal it will be enjoyed by all.
Cite this as: BMJ 2015;351:h6310
Thanks to Geraint Fuller for neurological inspiration and Elena King (née Binns) for photography and artistic direction.
Competing interests: I have read and understood BMJ policy on declaration of interests and declare that I have none.