If the seal has been broken on a bottle of VAT 69 whiskey purchased over 30 years ago is it still safe to drink?

Whiskey, unlike some other beverages such as wine , does not improve with age but remains essentially stable once bottled.

While there is no official expiry date for an unopened bottle of whiskey like VAT 69, experts have found that after opening an older whiskey its taste profile may change due to evaporation and oxidation over time.