This borosilicate glass coffee maker lends itself to the easy preparation of cold brew coffee. First, 120 grams of ground coffee are inserted into the infuser. The glass pitcher is then filled with cold water until the coffee is completely covered. After putting the closed coffee maker into the refrigerator for 16 to 24 hours, the infuser can be removed. The cold brew can now be filtered and diluted. Thanks to the food-safe silicone washers of the lid, the coffee stays fresh in the refrigerator for up to two weeks.