Yes, yes, this cake is wholly unappetizing, but that is pretty much the point.
Step 1: Fondant
- Water is super glue for fondant. A little bit means the pieces are stuck for life, but a little too much and nothing sticks together but your fingers.
- A little water on a paint brush can also make a high gloss finish that sticks around for about 12 hours.
- Dry powdered sugar on a brush will remove a gloss finish and make it matte
- Be careful about painting. The more water you add, the more the fondant will become flat over time. I painted one section and it looked great, and then five minutes later it had leveled out flat and lost the details of the sculpt.
There are lots of Instructables for fondant, so I won't get too detailed here. I made my own fondant using marshmallows and powdered sugar and used more sugar than most recipes recommend so that it could hold up to the sculpting.
What I did (over and over and over)
1. Melted about 8oz of mini marshmallows in the microwave for a minute.
2. Stirred for a few seconds until it was smooth.
3. Then I added powdered sugar through a sifter until I couldn't stir anymore. Usually because it was all stuck to the spatula lollipop style. If I didn't sift it in, it just took longer to knead out the little pockets of powdered sugar.
4. Dusted a large counter sized cutting board and my hands with powdered sugar and kneading the dough until was smooth and no longer sticky. It look about 2-5 minutes.
5. I alternated adding food coloring and kneading in two or three steps so it wouldn't break through the dough before it was mixed in.
Step 2: Rice Crispy Foundation
Since the front of the faces have the greatest amount of detail, I wanted to build them onto a rice crispy foundation. I also wanted to have an extra day to work on the sculpt without the actual cake sitting on the counter for 8 hours underneath. I heated the marshmallows for about a minute in the microwave and added as much cereal as I thought it could take without starting to break apart then immediately started to lay them down.
I found the key to sculpting with the Rice Crispy treats is to have a bowl of water to keep your hands lightly wet. The marshmallow won't stick, but it's not enough liquid to start to dissolve the sugar or cereal. After you have it down, it's basically styrofoam and can be easily smooshed into the right forms.
Step 3: Fondant Sculpt
My biggest mistake was not making enough fondant to start so I had two colors going into the face. At first I thought it made sense, but the more I worked on it, I realized it should be one color so the paint goes on more evenly in the end.
Step 4: Teeth
Step 5: Paint the Faces
Step 6: Cake!
When it came out I took another rolled piece of fondant and covered the cake. Then, gently, I placed the rice crispy treat faces onto the top of the cake and pushed down any edges to match better with the bottom cake portion.
Step 7: Sculpting and Painting the Sides
With the same color scheme, I painted the sides and did some touch up paining on the face. I also went in to do the detailing on the face like veins, the iris of the eye, feckles and a few other things to break up the large portions of skin.