Combine the cream and sugar in a large bowl and whip until stiff.
Pour the very hot coffee into 6 oversized mugs and divide the dulce de leche among the mugs (1 ounce in each). Stir until completely dissolved and combined. Add 1 tablespoon whiskey to each mug. Top with a heaping tablespoon each whipped cream and grated chocolate.
Recipe courtesy of Ree Drummond