2 1/2 quarts popped popcorn
1 cup plain yogurt
1 cup brown sugar, firmly packed
1/3 cup light corn syrup
Put popped popcorn in a large bowl and keep warm.
In a 2 1/2-quart saucepan, combine yogurt, brown sugar and corn syrup. Cook and stir over medium heat to hard ball stage, 250*F (120*C) on candy thermometer. Pour over popped popcorn, stirring to coat.
Makes 2 1/2 quarts.