Special equipment: Wax paper to line the bottom of the pan to avoid burning the bottom of the cake
Preheat oven to 400 degrees F. In a large bowl mix the corn and white flour together. Pour milk into a saucepan and bring it to a boil over low heat. Just before it boils add salt. Slowly add the flour mixture to the milk, stirring constantly with a whisk. Cover the saucepan and let it simmer 15 minutes.
Remove from heat and stir in the butter. Add the raisins, figs, pine nuts, apple slices and Grappa, stir. Line baking pan with wax paper, pour mixture into the pan and use a spatula to pat the mixture down. Crack egg into a bowl and beat, brush the egg lightly over the top of the cake. Bake for one hour.