An undertaker kept a Marathon bar in his biscuit tin for 30 years for "nostalgia."
Ian Kay, 56, bought the chocolate bar as a memento when Mars announced it would be changing the name to Snickers in 1990.
He preferred the name Marathon so kept hold of the treat since - and now, decades on, by chance.
The man still lives in the same house he was in when he bought the caramel snack, report the Manchester Evening News .
Now Ian jokes the chocolate bar will "end up in a museum" or stay in the tin "until it evaporates into dust".
"I'm quite nostalgic. I don't like chucking stuff out. My misses will say 'I need to get rid of that'."
"I think I will get a packet of the new ones. I'll leave it in the tin with the others until I die," Ian, from Failsworth, Greater Manchester, said today.
"I'm glad they're changing the name. It should be changed permanently. It sounds better.
"All these 20 or 30-year-olds wouldn't even know (that it used to be called Marathon). They would think 'why change it back?'
"It's what you grow up with."
The undertaker cannot remember where he bought the treat or anything about the day in question.
But he doesn't intend to chuck the snack away.
The husband added: "I must have thought at the time 'I'll keep it at the bottom of the biscuit tin'. It has always been at the bottom of the biscuit tin.
"One year past, we took biscuits out, and I thought 'should I eat it?', then five years past, then ten years...
"I don't want to ruin it. I'll just leave it as it is. I just don't know what it would be like inside. The chocolate might be white."
Ian's wife Sharron "isn't bothered" he's kept hold of the Marathon bar.
Ian, who says his favourite chocolate is Mars, added: "We rarely use the tin to pass around. We keep putting custard creams on the top. It will stay there until it evaporates into dust.
"A few friends know about it. My sister said 'you are sad, I know what you are like.'"
