Bourbon

Products listed as Certified are preferable to those listed as Approved.
In general, bourbon does not require kosher certification. Two exceptions are:
1 - Some have begun adding flavors and/or aging the liquor in wine casks. Such items would not be acceptable without certification, and consumers can determine if a given liquor has this issue by carefully reading the bottle's label.
2 - Some bourbon companies are owned by Jews who do not sell their chametz; those brands are not recommended and are listed below. See http://bit.ly/AKOAlert for details.