1. Make the vanilla panna cotta: in a small bowl whisk gelatin and water. Set aside for 10-15 minutes. 2. In a medium saucepan, heat the heavy cream, milk, and sugar over medium-low heat. until sugar has dissolved. (do not boil). Remove from heat, add vanilla extract and stir. Stir in gelatin and immediately whisk until smooth and dissolved. Pass through a sieve. 3. Set the glasses on an angle in a small container or a muffin tin. If the glasses slide, place a small towel underneath to help stabilize. Pour the mixture. Refrigerate for at least 4 hours. 4. Make the chocolate panna cotta: in a small bowl whisk gelatin and water. Set aside for 10-15 minutes. 5. In a medium saucepan, heat the heavy cream, milk, and sugar over medium-low heat. until sugar has dissolved. (do not boil). Remove from heat, add vanilla extract, chocolate and Stir until chocolate is completely melted. Stir in gelatin and immediately whisk until smooth and dissolved. 6. Let cool 15-20 minutes then pour the chocolate-milk mixture through a sieve into the glasses. Refrigerate for at least 4 hours.