The perfect cup of coffee not only starts with the beans, but also thstorage. The Kilner cof ee grinder helps make a great cup of coff ee and comes complete with a Kilner jar and airtight lid. The lid will keep the coff ee dry and airtight and the glass jar is perfect for sealing in the rich coff ee taste and aromas. Once you’ve fi nished grinding, store in the fridge, keeping cool for maximum freshness. The Kilner coffee grinder is made from high quality stainless steel and features an adjustable grinder mechanism. Grinds enough for one cup or for the week ahead. Dishwasher Safe. Do not pour boiling water direcly in to your jars/bottles.