Stir together the heavy cream, agave, cinnamon, cumin and salt in a large bowl.
Place the chopped chocolate in the bowl of a double boiler. Set the bowl over a pot of gently simmering water and stir until the chocolate is fully melted, about 5 minutes. Remove the bowl from the pot and set on a dish towel to dry the bottom of the bowl.
Using a hand-held mixer, whip the spiced cream just until it forms soft peaks, 2 to 3 minutes; be careful not to over-whip. Now, using a rubber spatula, quickly and gently fold the melted chocolate into the whipped cream. Serve immediately, or divide the mousse among serving bowls and refrigerate until ready to serve.
Recipe courtesy of Giada De Laureniits