From the resurgence of craft cocktails to drinks devised purely for sharing on Instagram, there always seems to be a new beverage fad sweeping through urban cafés, restaurants, and bars. But a new movement might have some stronger roots.

Meet sustainable cocktails, the next wave of mixed drinks that could save money, time, and resources for bartenders and restaurant managers while also—in small part—help save the planet from added waste.

But the first step to spreading awareness about the trend might be defining what “sustainable cocktails” are exactly.

“Sustainable cocktails are drinks that seek to be more in harmony with nature by minimizing precious natural resources, conserving energy, and minimizing pollution,” explains Natasha Velez, a New York-based bartender and brand ambassador for Sombra Mezcal. “They often reuse, recycle, or upcycle ingredients that otherwise would be discarded as trash. This includes leftover citrus juices, citrus rinds, and the seeds and skins of fruits.”