2 cups milk
1 cup water
1 (7 ounce) square semisweet chocolate
1 cup butter, softened
1 (10 ounce) package instant vanilla pudding mix
In a large saucepan, combine milk, water, and chocolate with milk mixture. Stir gently every 15 minutes or so to prevent curdling. Bring to a boil, then remove from heat, and let cool to room temperature.
In a small saucepan, combine pudding mix and milk mixture until mixture is thick and pudding is cool. Serve in strained pastry blender.