Here's the recipe from Paula Deen's website:
2 cups sugar
1 1/3 cups water
1/2 cup light corn syrup
1 teaspoon white vinegar (I used apple cider vinegar - because that's what I had on hand)
1/2 teaspoon salt
1 teaspoon vanilla extract
18 cups popped corn
Directions
In a medium saucepan, combine sugar, water, syrup, vinegar, and salt. Cook over high heat until mixture reaches 255 degrees F (hard-ball stage) on a candy thermometer. Stir in vanilla. Pour over popped corn, tossing gently to coat. When mixture is cool enough to handle (and be careful because HOT sugar can burn badly), press popcorn into 3-inch balls with lightly greased hands. Cool completely on waxed paper.
1 1/3 cups water
1/2 cup light corn syrup
1 teaspoon white vinegar (I used apple cider vinegar - because that's what I had on hand)
1/2 teaspoon salt
1 teaspoon vanilla extract
18 cups popped corn
Directions
In a medium saucepan, combine sugar, water, syrup, vinegar, and salt. Cook over high heat until mixture reaches 255 degrees F (hard-ball stage) on a candy thermometer. Stir in vanilla. Pour over popped corn, tossing gently to coat. When mixture is cool enough to handle (and be careful because HOT sugar can burn badly), press popcorn into 3-inch balls with lightly greased hands. Cool completely on waxed paper.
(My candy thermometer was missing - think my daughter 'borrowed' it - so I tested the syrup by dropping a bit in a cup of cold water - to see if it was at the hard-ball stage).