He sent her three feet of parchment denoting the excitement over the barrels. They were ever filling and kept an internal chilled temperature. According to historians, a Portuguese wizard created them during the Age of Exploration. Most believed the method of construction was lost forever due to its lack of use with the invention of ice boxes and cooling cabinets. Anger flooded Hermione, somehow that family knew there were some there and preserved, and they planned to steal them from her.