It's hard to say precisely when the cantarito was invented, but it's reportedly been around since the Mexican Revolution, which lasted most of the 1910s. A refreshing cantarito has grapefruit soda and juice, tequila, orange juice, and a Tajín rim (a chili seasoning enhanced with citrus), which is all served in a clay pot called a cántaro, which helps the drink remain colder for longer.