A whole larva is deposited in the bottle, normally after having previously been cured in pure alcohol. Nacional Vinicola (NAVISA) was the first company to add a worm to its Gusano Rojo mezcal. Andres Paniagua and Jacobo Lozano, creators of Gusano Rojo and Dos Gusanos, first introduced the practice of adding larva to mezcal.[1] Today, several brands are doing this.