Product Details Return to Top Overview Our chief coffee buyer enjoyed her first sip of coffee from a beautiful, hourglass-shaped contraption that her parents owned. The vacuum method is now enjoying a resurgence in popularity, and rightfully so. This one features two globes of safe, borosilicate glass. Add cold water to the lower globe, coarse grounds to the upper globe, and place it on the stove. Vacuum brewing creates smooth flavor, rich aromas, and a touch of coffee theater.