If you’ve ever wondered what just exactly “straight” means on your bottle of whisk(e)y, it turns out there’s in fact a legal definition for it set out by the United States Federal Government. The Electronic Code of Federal Regulations’ Title 27.1(A)(5)(c), current as of April 19th, 2016, governs the “Standards of Identity for Distilled Spirits.”

“Bourbon whiskey,” “rye whiskey,” “wheat whiskey,” “malt whiskey,” or “rye malt whiskey” are whiskies produced at not exceeding 160° proof from a fermented mash of not less than 51 percent corn, rye, wheat, malted barley or malted rye grain, respectively, and stored at not more than…