Place coffee, cocoa and cinnamon in a filter for coffee brewing. Make 4 cups of brewed mocha-cinnamon coffee. Pour a shot of coffee liquor in the bottom of a coffee mug. Pour in a serving of brewed mocha-cinnamon Mexican coffee. Top off the mug with a generous swirl of whipped cream and garnish with another sprinkle of cinnamon. Repeat for desired number of mugfuls!