Mix brown sugar, butter, corn syrup and salt in a medium sauce pan. Cook over medium-low heat, stirring until mixture starts to boil. Reduce heat to low and cook for 5 minutes without stirring. Remove from heat and stir in baking soda and caramel flavor. Pour over popcorn and

Bake at 250 degrees F for 25 to 35 minutes. Stir popcorn every 10 minutes.