For best results, don't use hot chocolate or cocoa mixes that contain powdered milk or other dairy products, which can change the structure and texture of the pancakes. To make homemade whipped cream, put 1 pint heavy cream, 1 tablespoon granulated sugar and 1 teaspoon vanilla extract in a well chilled bowl or in a bowl over ice. Beat with an electric hand mixer on medium-high speed until soft peaks form, about 2 minutes.