Pour into a warm fondue pot. Pour caramel into the center of the chocolate mixture. Do not stir. Add rum to the pot and ignite carefully, using a long wooden match or lighter. Allow flame to burn out and stir gently to mix. Sprinkle with the pecans. Keep fondue warm over low heat.
Serve with cubes of bread, fruit, marshmallows, and cookies.
Source: The Melting Pot