Caramel popcorn v2

I finally had corn syrup:

Pop 4 cups popcorn, keep warm.

Then make caramel:

• 3 tablespoons and 1/2 teaspoon butter
• 1/3 cup and 1 tablespoon brown sugar
• 1 tablespoon and 1-3/4 teaspoons corn syrup
• 1/4 teaspoon salt

• 1/8 teaspoon baking soda
• 1/4 teaspoon vanilla extract