I got the idea somewhere on this board to make a Mt. Doom cake for my Oscar party, and wanted to report back. It was very successful, though the eruption was not as impressive as I had hoped.
First, I took my favorite chocolate cake recipe, which is totally non-gourmet, but is the most moist cake I have every tasted baked at home (I am very picky about dry cake) and I tripled the recipe.
Here is the (non tripled) recipe:
One box Betty Crocker Chocolate Fudge Cake mix
One box Instant Pudding mix
1/2 pint regular sour cream
3/4 cup oil
one cup whole milk
one bag chocolate chips
Mix all ingredients together with a mixer except chips for about 4 minutes, add chips at the end. Usually, this is made in a bundt cake mold, and just sprinkle the top with powdered sugar and maybe fresh strawberries.
For Mt Doom I made six 9-inch layers, stacked them on top of each other, and then cut them to be more of a cone shape. I then cut a hole in the top and inserted a shot glass. I then frosted the cake with brown frosting, and put some green touches for vegetation, and some reddish lava. The colors I made with food coloring, so they were not as menacing as I would have wanted.
I got some little figurines of Frodo, Sam and the Golum from the local gaming store, and placed them on the mountain.
Then, to erupt, I filled the shot glass with a mixture of warm liquid jello, lemon juice and baking soda, and it erupted. I had found an alternate method involving dry ice that probably would have been more impressive, but I did not have any dry ice on hand.
The cake made a very fun centerpiece for the party, and tasted good too. The recipe is so moist that all the layers sort of mushed together, and it looked like I had just made one huge cake. I do have to admit its not very diet friendly though...