Pedro Ximenez in a sealed bottle will last for 24 to 48 months. If the bottle is open it will last 1 -2 months.

Does Pedro Ximenez need to be refrigerated?

Sweetened wines usually last a bit longer as well, and Pedro Ximénez can survive several months in a cool environment. Amontillado will keep best in a fridge, but open bottles of other oxidative types can be stored in a (cool) room as well.

How long does an unopened bottle of sherry last?

SHERRY, COMMERCIALLY BOTTLED - UNOPENED

The answer depends on the type: some sherrys are at their best quality within 1 years of production, while certain sherry can retain quality for many years; all unopened sherry will stay safe indefinitely if properly stored.