The Carters recently collaborated with nutritionist Marco Borges on his new cookbook titled The Greenprint: Plant-Based Diet, Best Body, Better World.
Fader reports Beyoncé and JAY-Z wrote the introduction for the new guide, and they are giving fans a unique incentive to give the vegan lifestyle a try.

The Lemonade singer announced via Instagram that fans who commit to a plant-based lifestyle, part or full time, will be eligible to win Beyoncé and/or JAY-Z concert tickets for life, one pair per tour, for up to 30 years, according to official rules.

"What is your Greenprint," asked the songstress. "Click the link in my bio for a chance to win tickets to any JAY and/or my shows for life.