If you've ever turned a violent shade of green when someone mentions tequila, it's likely because you had a bad experience with a blend called "mixto." This distinct form of tequila only needs to contain 51 percent agave. The other 49 percent is often a hangover-inducing mix of fillers, sweeteners, and sugars distilled from other non-agave plants. It’s a cheap way to produce something that’s still technically tequila without the pedigree—but with killer headaches.
Mixto gives tequila blends a bad name.