How long can you keep an opened bottle of Pimms No1?

Once opened, a bottle of Pimm's No. 1 can typically be kept for about 3 to 5 months if stored properly. It's best to keep it in a cool, dark place and tightly seal the bottle to maintain its flavor. While it may still be safe to consume after this period, the taste may deteriorate over time. Always check for any off smells or changes in appearance before consuming.