How to Make Popcorn Balls (Classic Halloween Treat)

Pop about 5 quarts of popcorn - three or four standard microwave bags - and tip it into your largest mixing bowl. Pull out every unpopped kernel by hand. A hidden kernel will crack a tooth once the syrup hardens, so this minute of sorting is not optional.

Slide the bowl into a 300-degree oven on the lowest rack to keep the popcorn warm while you cook the syrup. Warm popcorn coats evenly. Cool popcorn sets the syrup before you can finish mixing, and you end up with a few sticky lumps instead of a bowl of evenly glazed kernels.

Rub the inside walls of a medium saucepan with butter, all the way up to the rim. Sugar syrup climbs as it boils, and any sugar that touches a dry wall recrystallizes and seeds the rest of the pan into a grainy mess.

The butter film stops the climb and gives you a smooth, glassy syrup. A teaspoon's worth on a paper towel is plenty - you are coating the walls, not greasing them.

Add 2 cups sugar, 1 1/2 cups water, 1/2 teaspoon salt, 1/2 cup light corn syrup, and 1 teaspoon white vinegar to the buttered pan. Stir once with a wooden spoon to dissolve, then clip your candy thermometer to the side so the tip sits in the liquid without touching the pan bottom.

Set the burner to medium-high. From here on, do not stir. If the syrup looks uneven, swirl the pan gently by the handle instead. Stirring beats air into hot sugar and triggers the very crystallization the butter and vinegar are working to prevent.

Bring the syrup to a steady boil and watch the thermometer climb. You are aiming for 250 degrees - the hard ball stage. The syrup will go from clear to slightly cloudy to a faint amber, and the bubbles will get smaller and tighter as the water boils off.

If you do not own a thermometer, drop a tiny spoonful into a glass of ice water. At hard ball stage it forms a firm, pliable ball you can lift out and squeeze between your fingers. Pull the pan off the heat the moment you hit temperature. Stir in 1 teaspoon of vanilla now - it will hiss and steam, which is exactly right.

Pull the warm popcorn bowl from the oven and set it on a heat-safe surface. Pour the hot syrup in a slow, steady stream around the perimeter of the bowl rather than dumping it in the middle.

A perimeter pour distributes the syrup across more popcorn at once. Dumping it in the center sends most of it straight to the bottom of the bowl, where it pools and turns into a hard puck while the top stays bare.

Use a buttered spatula or wooden spoon to fold the popcorn from the bottom of the bowl up over the top. Keep folding for a full minute until every piece has a glossy coat.

Fold - do not stir. Stirring breaks the kernels into shards and you end up with popcorn dust instead of popcorn balls. Long, slow turns of the whole mass is what you want. The bowl will feel heavy and the syrup will start to thicken as it cools, which is your cue to move to the shaping stage.

Let the coated popcorn cool for two to three minutes - long enough that you can press a clump without yelping but not so long that the syrup sets up. Butter your palms generously and scoop up a softball-sized handful.

Press it together firmly with both hands - really squeeze, do not be gentle - then roll it between your palms into a round shape. Set each finished ball on a parchment-lined sheet pan. Re-butter your hands between balls or the popcorn will start sticking to you instead of itself.

Let the balls set on the parchment for about 30 minutes until firm and dry to the touch. Pile the finished popcorn balls into a Halloween-themed basket - a black wire spider basket like the one in the video, an orange ceramic bowl, or a vintage tin all work - for an instant centerpiece that doubles as the dessert.

For trick-or-treaters, drop each ball into a cellophane treat bag and tie the top with a 6-inch length of curling ribbon or raffia. Orange and black ribbons sell the Halloween moment; yellow and white look like the 1950s original. Sealed in cellophane they keep at room temperature for up to a week - longer than that and the popcorn starts to soften and lose its snap.