i used to make this in high school and got the recipe from my home ec class...it was yummy...
1 cup brown sugar, packed
1/4 cup white corn syrup
1/2 teaspoon baking soda
1 Stick (4 oz.) margarine or butter
1/2 teaspoon salt
3 to 4 quarts of POPPED corn
Combine all ingredients except soda and popped corn in a 1Â½ to 2 quart microwave safe bowl. Put in microwave (HIGH) and bring to a boil. Boil for 2 minutes. Remove from microwave and stir in soda.
Put the popped corn in a brown grocery bag and pour the syrup over the corn. Close the bag by rolling it down a couple times and SHAKE HARD. Cook in the bag on HIGH microwave for 1Â½ minutes. Remove and shake vigorously and cook in the microwave another 1Â½ minutes. Remove and shake again. microwave another 1Â½ minutes. Shake when you remove it from the microwave and pour it on a large cookie sheet to cool. Store in an airtight container when cool.