Cut across middle of sponge cake, forming two layers, each about 1 1/2 inches thick. Blend coffee and brandy. Sprinkle enough mixture over bottom half of cake to flavor it strongly. Don’t moisten cake too much or it may collapse on serving. Beat room-temperature cheese and 1-cup sugar until sugar is completely dissolved and cheese is light and spread able. Test for sweetness during beating, adding more sugar if needed. Spread cut surface of bottom layer and half of the cheese mixture. Replace second layer and top layer with half of the cheese mixture. Sprinkle top literally with sifted cocoa. Refrigerate cake for at least two hours before cutting and serving.