Banana Nog Recipe

In a large heavy saucepan, combine 1-1/2 cups milk, 1-1/2 cups cream, egg yolks and sugar. Cook and stir over medium-low heat until mixture reaches 160 ° and is thick enough to coat the back of a metal spoon. Place bananas in a food processor; cover and process until blended. Pour milk mixture into a pitcher; stir in the banana puree, rum, creme de cacao, vanilla, and remaining milk and cream. Cover and refrigerate for at least 3 hours before serving. Pour into chilled glasses. Garnish with whipped cream and sprinkle with cocoa if desired.