Popcorn Balls - cooking recipe

Ingredients

1 cup white sugar
1/3 cup light corn syrup
1/4 cup margarine
1/3 cup water
1/2 teaspoon salt
1 teaspoon vanilla
2 quarts popped popcorn

Preparation

Keep popcorn warm in 250 degree oven.
Cook first five ingredients over medium heat, stirring constantly until mixture comes to a boil.
Continue cooking without stirring until mixture reaches 270 degrees on a candy thermometer or until a small amount dropped into very cold water separates into hard threads.
Add vanilla and stir.
Pour mixture over popped corn, mixing with a fork.
When cool enough to handle but still quite warm, form into balls.