Caramel Corn
["2 sticks butter", "1 box brown sugar", "1/2 c. Karo syrup", "1/2 tsp. soda", "1 tsp. vanilla", "1/2 grocery sack popped popcorn *"]
["*Corn popped in air popper works very well."]
["butter", "brown sugar", "syrup", "soda", "vanilla", "sack"]