01 -
Pop ½ cup of popcorn kernels using an air popper or stovetop until you achieve about 10 cups of large, fluffy popcorn. Remove any unpopped kernels and spread the popcorn evenly on a parchment-lined baking sheet.
02 -
Combine sugar, corn syrup, unsalted butter, water, and salt in a medium saucepan. Cook over medium heat, stirring gently until the sugar dissolves and mixture begins to simmer.
03 -
Remove the saucepan from heat briefly, then stir in vanilla extract and red gel food coloring, starting with ¼ teaspoon and adjusting for desired intensity.
04 -
Increase heat and bring syrup to a boil without stirring. Cook until it reaches 250°F (hard-ball stage) on a candy thermometer, approximately 4 to 5 minutes.
05 -
Immediately pour the hot syrup evenly over the popcorn. Toss quickly with a silicone spatula to coat all pieces before the syrup sets.
06 -
Bake the coated popcorn in a preheated oven at 250°F for 30 minutes, stirring every 10 minutes to ensure even coating and prevent clumping.
07 -
Remove from oven and let the popcorn cool completely on the baking sheet. Break apart any clusters before serving.