JERUSALEM (VINnews) — Israel’s Chief Rabbi and President of the Chief Rabbinate Council, Rabbi Kalman Meir Bar, has published a comprehensive halachic essay on the kashrut status of various types of whisky, following numerous questions and inquiries on the subject.

In the article, published on the rabbi’s responsa website, the Chief Rabbi distinguishes between different types of whisky according to the production laws in their countries of origin:

• American whisky (bourbon): Generally does not raise kashrut concerns in most cases, since U.S. law requires it to be aged exclusively in new oak barrels.
• Scotch and Irish whisky: This is where the primary concern exists, as producers commonly import used barrels that previously aged wines (such as sherry and port) in order to impart distinctive flavor, aroma, and color to the whisky.
• Canadian whisky: The concern is even greater, because Canadian law permits the addition of flavoring components, which may at times include actual wine.

The Chief Rabbi delves into the intricacies of Jewish law, examining a variety of arguments and grounds for leniency based on the rulings of leading halachic authorities, including the Minchat Yitzchak and the Igrot Moshe.

Among the issues discussed is the halachic principle that wine absorbed into the walls of a barrel becomes nullified when mixed into six times (or, according to other opinions, sixty times) its volume of whisky. The article also explains that the purpose of barrel aging is not to impart the direct flavor of the wine, but rather to soften the harshness of the wood. Therefore, the wine is not considered an intentionally added flavor (avid leta’ama), which would carry greater halachic significance.

In addition, the essay discusses a particular leniency regarding whisky aged in second-fill barrels or later, where the previous spirit has already extracted most of the absorbed wine from the barrel.

Alongside the issue of wine, the article warns about industrial additives that are sometimes incorporated into whisky, such as a strengthening or blending agent known as a “blender,” which may contain non-kosher ingredients. It also raises a significant concern regarding chametz she’avar alav haPesach, leavened products that remained in the possession of a Jew during Pesach, particularly in distilleries owned by Jews who do not observe the holiday’s prohibitions.

In his concluding remarks, Rabbi Bar writes that although, strictly speaking, there are numerous halachic grounds for leniency that could permit the consumption of such whisky, “one who fears Heaven and is scrupulous in observing God’s word should not, as a matter of course, rely on these leniencies.” He therefore calls on the public to purchase only whisky that has been certified by recognized kosher certification agencies.

Accordingly, he states that the Chief Rabbinate of Israel will continue its strict policy of refusing to approve the import of alcoholic beverages unless they undergo thorough inspection and receive proper kosher certification.