1/2 c. light corn syrup
1/8 tsp. cream of tartar
2 c. brown sugar
1 c. butter

Boil this for 5 minutes. Remove from heat and add 1 teaspoon baking soda. Stir in and pour over 5 quarts popped popcorn in a shallow pan. Bake 1 hour at 225 degrees stirring every 10 minutes.

P.S. Add any nuts you want with the popcorn before stirring in the boiled mixture. I like to use pecans and almonds.