If you've spent any time reading about liquor over the past year, there's a good chance you've heard about tequila additives. They've taken on the role of the alcoholic boogeyman — a secret substance ...

But is additive-free the only indicator of quality? In 2012 Grover and Scarlet Sanschagrin launched the mobile app Tequila Matchmaker as an offshoot of their online blog Taste Tequila. Through the ...