Caramel corn is a great sweet treat.
This is an old family recipe. It makes a lot.

Preheat your oven to 200 degrees F.

7-1/2 quarts popped corn- If you use an air popper 2-3 batches will give you the amount you need.
2 cups brown sugar
1 cup butter
1/2 cup light corn syrup
1 teaspoon salt
1 teaspoon baking soda

In a large pan or dutch oven combine the brown sugar, butter, corn syrup, and salt. Bring to a boil, and let it continue to boil for 5 minutes. Remove from the heat and stir in the baking soda quickly.
Pour the brown sugar mixture over the popcorn and mix well.
Divide the popcorn among 3-4 large baking pans. Put in the oven and stir every 15 minutes. After an hour take it out of the oven and let it cool.