Unfiltered LBV Ports can last for two to three weeks if they are stored at approximately 8 °C to 10°C. Filtered LBV Ports can last around 10 to 12 days after opening, without any significant loss of quality. Aged Tawny Port. Aged tawny port wines that are 10-40 years old can last up to two months after being opened without any noticeable
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