Any tequila that’s worth drinking is made from 100% blue agave (a cactus-like plant that takes about 7-10 years to mature). Tequilas that aren’t 100% blue agave are called mixtos, which is Spanish for “hangover delivery device.” Mixtos add sugar, artificial colorings and flavorings, chemicals, you name it. Sure, they’re cheaper than 100% blue agave tequilas, but you pay the price and then some the next morning.