Is balsamic vinegar kosher for Passover?

Here's why:

* Traditional Balsamic Vinegar: This is made from cooked grape must (concentrated grape juice) and is aged for a long time in wooden barrels. It is NOT kosher for Passover. The long aging process can involve the use of wine, which is forbidden during Passover.

* Commercial Balsamic Vinegar: Many commercial balsamic vinegars are not aged for long periods, and they may be made with added ingredients like caramel color, sugar, or other substances that are not necessarily kosher for Passover. You need to check the label carefully.

* Kosher for Passover Balsamic Vinegar: Some companies produce balsamic vinegars specifically labeled as kosher for Passover. These will be free of ingredients that are not kosher for Passover and will be made in a way that complies with Passover laws.

Therefore, the best way to determine if a specific balsamic vinegar is kosher for Passover is to check the label carefully. If it says "kosher for Passover" or "kosher for Passover under the supervision of..." then it is likely acceptable. If it doesn't have this label, it's best to avoid it.