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It was last for decades if unopened.
Unopened Sherry should last indefinitely,
Not long in my house !
.Who is with you?
Due to its high proof, an unopened bottle of Cointreau will last about 5 years.
3 years.
1 year
80
About three years.
If the bottle is unopened then it can last as long as you want it to, but I personally wouldn't drink it after having for more than 9 months or so.
As long as you have not opened it, it can last for over a year.
A can of unopened Tuna will keep for 5 years...under normal conditions