Barrell has only been around since 2013, which is a surprise, since their whiskies have the quality of a longtime maker. But they’re a non-distilling producer: They search out interesting single barrels and bottle them at cask strength. All of Barrell’s products all limited profile, however, so once they’re gone, they’re gone. Let’s just say I’m very miserly with doling out Batch 006.

We have reviewed a number of Barrell bourbons and whiskies on this site, and so when the latest bourbon, batch 007 came in, I jumped at the chance to review it. And yet like any good spy,…