- Place popcorn in a large mixing bowl.
- Combine the water, sugar, corn syrup and butter in a heavy saucepan. Cook over moderate heat to 280 degrees (measure with a candy thermometer).
- Remove from heat and add the vanilla. Stir well and pour over the popped corn. Coat completely.
- Add the cranberries, chocolate chips and pistachios. Toss again.
- Cool completely. Break into pieces and store in an airtight container.