Preparation Cut the vanilla bean lengthwise in half. Scrape seeds into large saucepan. Add bean, milk, and whipping cream and bring to simmer. Remove from heat; cover and let steep 20 minutes. Return to simmer. Add the chopped chocolate and sugar; stir until melted and smooth. Mix in liqueur. Ladle into mugs and serve.
Preparation Cut the vanilla bean lengthwise in half. Scrape seeds into large saucepan. Add bean, milk, and whipping cream and bring to simmer. Remove from heat; cover and let steep 20 minutes. Return to simmer. Add the chopped chocolate and sugar; stir until melted and smooth. Mix in liqueur. Ladle into mugs and serve.