Caramel Corn

Bahan-bahan (10 porsi)

• 10 cups popped popcorn (about ½ cup unpopped kernels), plain and unsalted
• 1 cup (2 sticks) unsalted butter
• 1 cup packed light brown sugar
• 1/4 cup light corn syrup
• 1/2 teaspoon fine sea salt
• 1/2 teaspoon baking soda
• 1 teaspoon vanilla extract
• optional: flaky sea salt for sprinkling