16 c. popped popcorn
1/2 c. butter
1/2 tsp. salt
1 c. brown sugar
1/4 c. light corn syrup
1/2 tsp. baking soda

Microwave butter, salt, brown sugar and syrup in uncovered bowl for 3 minutes. Stir. Microwave another 3 minutes. Stir in baking soda.

Use 2 large brown grocery bags. Spray with Pam. Put 1/2 the popcorn in each. Do each bag separately. Pour 1/2 the caramel mixture on each. Microwave for approximately 2 1/2 minutes, stopping to shake bag every 30 seconds. After removing from microwave. Continue to shake every minute or so until cool to avoid sticking.