Betty Lou'S Cracker Jacks
["20 c. popcorn", "1 c. light brown sugar", "1/2 c. Karo (dark)", "2 sticks margarine", "1/4 tsp. salt", "1/2 tsp. baking soda", "1 tsp. vanilla"]
["Bring sugar, Karo, margarine and salt to a boil. When it boils, cook 5 minutes.", "Turn down.", "Add baking soda and vanilla. After it comes off stove, pour over corn and bake 45 minutes at 250\u00b0.", "Keep popcorn warm before baking. Store in airtight container."]
["popcorn", "light brown sugar", "margarine", "salt", "baking soda", "vanilla"]