This tea isn't calorie-free, but it's low enough with just 10 calories. It's also low in sodium, which is part of the nutritarian lifestyle, and as a bonus, offers a tiny bit of potassium. It's only made with carob, chicory, ramón seed, cacao, Prebiotic SuperBoost™ (vegan GOS: Gluco-oligosaccharide, organic XOS: Xylo-oligosaccharide), cocoa powder, and organic chocolate flavour.
Prebiotics are the food that probiotics eat, so this tea may help support digestion and regularity. I haven't had any issues in this department since I started eating nutritarian, so I can't say for sure whether this tea has really made a difference. But who cares because it tastes so damn good!