Kilner The perfect cup of coffee is not just about the beans, it's also about how you store them. This manual coffee grinder provides the optimal basis for a great cup of coffee. The glass with airtight closure seals the rich coffee flavour and aromas. In order to maintain the maximum aroma of the freshly ground coffee, you should store the sealed glass in a cool place, preferably in the refrigerator. The coffee grinder is made of glass and high quality stainless steel and has an adjustable mill mechanism. Grind as much as you want, for a cup or for the whole week to come.Kilner The perfect cup of coffee is not just about the beans, it's also about how you store them. This manual coffee grinder provides the optimal basis for a great cup of coffee. The glass with airtight closure seals the rich coffee flavour and aromas. In order to maintain the maximum aroma of the freshly ground coffee, you should store the sealed glass in a cool place, preferably in the refrigerator. The coffee grinder is made of glass and high quality stainless steel and has an adjustable mill mechanism. Grind as much as you want, for a cup or for the whole week to come.