1. Combine cream and vanilla bean in a small saucepan; sprinkle gelatin over cream, and let stand 10 minutes.
2. Cook cream mixture over medium-low heat, stirring constantly, 5 minutes or until gelatin is dissolved. Increase heat to medium; add sugar, and stir until sugar is dissolved (about 2 to 3 minutes).
3. Remove from heat. Scrape seeds from vanilla bean into cream mixture with back of a knife; discard vanilla bean. Whisk in buttermilk.
4. Divide mixture among 8 (10-oz.) glasses. Cover and chill 6 hours to 2 days. Spoon 2 to 3 Tbsp. Zinfandel-Poached Figs into each glass just before serving. Garnish, if desired.