Spent coffee grounds might seem like more hassle than utility. But, it turns out that those spent grounds can also get used for other purposes.
The nitrogen-rich slurry of used java beans can deodorize a fridge, serve as an organic de-icing alternative to salt or chemicals, and of course, as a plant-pleasing addition to compost and soil. However, one new startup has found another novel use for spent coffee grounds by creating biodegradable tumblers and cups.
Kreis Cup is a crowdsourced startup that collects coffee grounds from local coffeehouses and repurposes the waste into reusable, biodegradable, and plastic-free tumblers and mugs for a more sustainable alternative to unrecyclable single-use coffee cups containing a thin layer of plastic. Kreis is German for circle and an obvious nod to the circular nature of using spent grounds to make coffee cups.
