Place the egg yolks, sugar and wine into a metal bowl. Place the bowl on a pan of barely simmering water, making a double boiler. Whisk the mixture constantly until the mixture becomes foamy and then creamy, doubling in size, about 5 minutes. The mixture should be uncomfortably warm to the touch, but not burning. Remove from the heat and set aside.
In a small mixing bowl, whip the heavy cream until soft peaks form, about 2 minutes, and set aside.
In a medium bowl, mix the Mock Mascarpone cheese with the egg mixture using medium speed until well blended. Fold in the whipped cream.
Pour the coffee into a wide bowl; briefly dip 3 slices of the pound cake into the coffee, about 3 seconds each side. Transfer to a 6 to 8-ounce parfait glass to create the first layer. Top the slices of cake with a few spoonfuls of the cream filling mixture. Repeat the process with another 3 slices of cake and top with more filling mixture. Repeat the process for the remaining parfait glasses. Dust each dessert with the cocoa. Refrigerate for a couple of hours before serving.
In a small bowl, cream together the cream cheese, yogurt and vanilla extract with a mixer until well blended. Refrigerate if a firmer texture is desired. Use in recipes as an inexpensive alternative to mascarpone.