1 c. brown sugar
1 stick butter
1/2 c. white Karo syrup
1/4 tsp. salt
16 c. popped popcorn

Combine sugar, butter, Karo syrup and salt in large saucepan. Bring to boil for approximately 5 minutes. Place popped popcorn in buttered pan. Pour mixture over popcorn. Bake for 1 hour at 250 degrees, stirring often.