How do you read the expiration dates on a tonic water?

Expiration dates on tonic water are typically printed in a "month/day/year" or "day/month/year" format, depending on the region. Look for a date marked as "best by," "use by," or "expiration," which indicates the time frame for optimal flavor and quality. It's best to consume tonic water before this date for the best taste, but it may still be safe to drink shortly after, although carbonation and flavor may diminish over time. Always check for any unusual appearance or smell if consuming after the expiration date.