Costco only sells one store brand, and that's Kirkland Signature. But the chain doesn't produce liquor. So, what distillery is behind its popular bourbon line?

Costco carries a few of the brand's basic expressions, which are fine and fairly affordable Japanese whiskies. These whiskies ...

The company also keeps a strict policy of capping product markups to 15 percent, resulting in those eye-popping whiskey prices. Fortunately, I live in one of the 14 states where Costco is required ...