egg substitute, 2T at a time, mixing well after each addition. Remove 1 cup of the mixture and set aside. To the mixing bowl, add the brandy extract, pumpkin, and spices. Mix well with an electric mixer until all the ingredients are well-incorporated. Pour top one side of the crust. Pour the reserved cup of yogurt mixture on the other side. Shake lightly to even the top. With a dinner knife, cut through both batters several times in a circular motion to create a marbleized effect. Bake for 1 hour, until firm. (check after 45 minutes. Remove from oven an place on a cooling rack. Run a knife along the sides of the pan to loosen the cake. Cool for 30 to 40 minutes in the pan and then remove the sides. Chill in the refrigerator for 2 to 3 hours before serving.