How long afterbest before date can you eat unopened yogurt?

Unopened yogurt can typically be consumed safely for one to three weeks after the "best before" date, as long as it has been stored properly and shows no signs of spoilage, such as an off smell or mold. However, its texture and flavor may degrade over time. Always check for any unusual changes before consuming. If in doubt, it's best to err on the side of caution.