• 1 (12-in.) round cardboard cake base
• 1 (9-in.) round cardboard cake base
The day before: Line the bottom and side of each pan with plastic wrap, with the ends extending above the rim. Then place the two sheets of each set of parchment paper (12-inch and 9-inch) in the bottom of each corresponding cake pan; set pans aside. Wrap the cardboard cake bases with plastic wrap (the 12-inch will be used as the base once the cakes are removed from the pans, and the 9-inch will be used for support once the top tier is stacked atop the larger cake). Set them aside.
Beat 2 cups cream, 1 tablespoon sugar and 1 teaspoon vanilla or brandy until stiff peaks form. Spread some whipped cream along the bottom and sides of the 12-inch cake pan. Arrange chocolate wafers, flat side down, around the edge, then fill in the center of the pan, slightly overlapping the wafers. Spread a dab of cream on the flat side of a wafer, place cream-side down, on a wafer in the pan. Continue spreading whipped cream on wafers and stacking in the pan. (Yes, this is different from the original, smaller version of the cake.)
When needed, repeat whipping the next batch of cream: 2 more cups heavy cream, 1 tablespoon sugar and 1 teaspoon vanilla or brandy. Continue spreading cream on the wafers and stacking them, like coins, in the pan until filled to the rim.