Popcorn Balls

Directions

1. 1
   Place the popped corn in a very large bowl.
2. 2
   In a medium saucepan, combine the sugar, salt, water, corn syrup, butter, and vinegar.
3. 3
   Using a candy thermometer, cook uncovered, stirring occasionally, until soft-crack stage (270 degrees).
4. 4
   Remove from heat and stir in vanilla.
5. 5
   Slowly pour syrup over the popcorn, tossing until coated.
6. 6
   With buttered hands, quickly shape into balls being careful not to burn hands.