caramel popcorn recipe

Here's a tasty caramel popcorn recipe: Ingredients: 10 cups popped popcorn (about 1/2 cup unpopped kernels) 1 cup unsalted butter 2 cups packed brown sugar 1/2 cup light corn syrup 1 teaspoon salt 1/2 teaspoon baking soda 1 teaspoon vanilla extract