The Telegraph

The truth is, coffee doesn’t necessarily “go bad” and in the majority of cases, won’t be harmful to consume. For most of us, the idea of allowing a bag of coffee to expire is preposterous due to the volume in which we consume it. But for those rare instances when that bag you somehow forgot about magically appears behind the half-eaten jar of peanut butter and immediately transports you to morning bliss and tears at your heart and soul to immediately brew a pot – we’ve got a quick guide for you.