Chocolate Popcorn Balls

Directions

1. 1
   Mix together the sugar, cocoa, corn syrup, vinegar and salt thoroughly in a heavy saucepan.
2. 2
   Add butter; cook slowly, stirring constantly, until the sugar dissolves.
3. 3
   Bring the mixture to a boil; add evaporated milk slowly, so boiling does not stop.
4. 4
   Cook mixture over low fire, stirring occasionally, until it reaches 265°.
5. 5
   Mix into 2-quarts freshly popped corn.
6. 6
   Dip out large spoonfuls and make into balls, first wetting the hands in cold water or rubbing them lightly with butter.
7. 7
   One must work quickly. Yield: About 20 (4-inch) balls.