Here are some signs to look out for to tell if your port wine has gone bad: Smell: Port wine should have a rich, deep aroma. If you notice any strange or unpleasant smells, this may be a sign that the wine has gone bad. Taste: The taste of port wine should be rich and complex, with notes of fruit, nuts, and spices.

How Long Does an Open Port Last? If you own a good-quality, unopened Port bottle, it can last for a couple of years. The oldest known vintage ports which are still available are from 1815. They`re in drinking condition. You only need to take special precautions when opening the bottle. Non-vintage port can be stored for 5-10 years.

Port wine being stored at Taylor's. How long Port wine lasts after opening. Port wine is higher in alcohol than regular wine with alcohol levels between 19-22% ABV.. Apart from Vintage Port, the higher alcohol levels mean that Port wine can last longer than regular wine after opening.This is especially true for Tawny Port.

Unfortunately, its lifespan is cut short after opening. Port in a decanter can last between two weeks to three months. The amount of time it can last in a decanter depends on several factors such as decanter type, amount of Port in the decanter, prevailing environmental conditions, and how often you open the decanter.

A young Tawny port wine may have an aging potential of around 10 to 20 years, while older Tawnies can age well for several decades. Vintage port wine is considered the king of port wines, made from exceptional grapes harvested in a single year.

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