The word "mezcal" comes from the term mexcalli, which roughly translates to "oven-cooked agave" and refers to the production process of mezcal. Traditionally, mezcal is produced in small-scale production houses called fábricas or palenques. Each batch is handcrafted based on different techniques that have often been passed down through generations.
In general, the hearts of the agave, known as the piñas, are chopped into small pieces. The pina is then cooked inside earthen pits that are lined with lava rocks and filled with wood and charcoal before being distilled in clay pots. While some large-scale mezcal producers have adopted modern methods, artisanal mezcal makers continue to use this more traditional method. The pits are then covered with a heavy coat of dirt, where the piñas sit and roast for 6-8 days, which is the source of the smokiness commonly associated with mezcal.
Both tequila and mezcal are made from the core of the agave. However, tequila is typically produced by steaming the agave inside industrial ovens before being distilled two or three times in copper pots.
Once the distillation process is over, both tequila and mezcal are aged inside oak barrels. Both spirits are defined by how long they age, or "rest". Tequila and Mezcal come in four main varieties: blanco (silver, joven or plato)/rested 0-2 months), reposado (rested 2-12 months) anejo (rested 1-3 years) and Extra Anejo (rested 3-6+ years).