Can sparkling cider from 2011 still be drunk now?

It's highly unlikely that sparkling cider from 2011 is still good to drink. Here's why:

* Sparkling Cider is Not Designed for Long-Term Storage: Unlike some wines, sparkling cider is not meant to age. It's a refreshing, bubbly beverage that is best consumed fresh.

* Sugar and Yeast: Sparkling cider contains sugar, which can ferment over time. This fermentation can change the flavor and make the cider taste vinegary or sour.

* Oxidation: Exposure to air can oxidize the cider, causing it to lose its flavor and sparkle.

The Bottom Line: While it's possible the cider could still be safe to drink, the taste and quality are likely to be significantly compromised. It's best to err on the side of caution and discard the cider.