Caramel Corn
["8 to 9 qt. popped popcorn", "2 c. brown sugar", "1 c. butter", "1 tsp. salt", "1/2 c. sugar", "1 tsp. vanilla", "1/2 tsp. soda"]
["Boil together the sugars, butter, salt and vanilla for 4 to 5 minutes (hard boil). Add the soda and stir.", "Pour over popped popcorn. Bake in oven at 250\u00b0 for 1 hour. Keep stirring at times while in oven."]
["popcorn", "brown sugar", "butter", "salt", "sugar", "vanilla", "soda"]