Mezcal Zignum Joven. Zignum Mezcal is made using espadín agave, which are harvested at the peak of their maturity. Zignum's mezcalero keeps their eye on every aspect of the production of the spirit, from field to bottle, ensuring a top notch mezcal. The distillery also has a big focus on sustainability, operating its own wastewater treatment facility, using solar energy for heating, and more.