Microwave Caramelcorn

1 cup light brown sugar
1 cube butter
1/4 cup light corn syrup
1/4 tsp. salt
1/4 tsp. baking soda
1 batch freshly popped popcorn (unsalted)

Put popcorn in large microwave-able bowl.  Combine brown sugar, butter, corn syrup, and salt in a medium microwave-able bowl.  Microwave on high 1 minute 30 seconds.  Add baking soda.  Stir.  Cook for another 1:30, stir.  Pour caramel over popcorn, stir lightly.  Place large bowl with caramel and popcorn in microwave.  Cook for another 1:30, stir.  Cook for one last 1:30, stir and let cool.