Brewed here. Grown here.
Your latte
grew this.
Your neighborhood café’s spent coffee grounds, reimagined as an oyster mushroom grow kit. A little everyday wonder, right on your kitchen counter.
Coffee lover → countertop grower → home cook
to dinner ingredient.Oyster mushrooms
Grown by you
Small beginnings. Clear intentions.
The Groundloop way
Good grounds.
A fresh beginning.
Not a garden. Not a complicated project. Just a café-branded kit and a front-row seat to something growing.
7–10 days
The typical window for oyster mushrooms to sprout once growing begins. Timing varies with your kit and conditions; follow the included instructions.
Brewed at your café
We turn spent grounds into a prepared, colonized growing substrate. Each café-branded box keeps the connection to where your coffee story started.
Grown on your counter
Your kit includes the growing bag and a simple instruction card. Follow the care steps, watch the clusters emerge, and capture a daily photo of the transformation.
Harvested for your table
Pick your oyster mushrooms when they’re ready, then cook them into a proper grounds-to-dinner moment. Share your progress with #BrewedHereGrownHere.
Bring the loop home
A gift that keeps growing.
For the coffee person, the curious cook, or the friend with one sunny windowsill. Our core café-branded kit is planned at $19–$25; see the catalog for current pricing and availability.
For independent cafés
Your grounds.
Your name on the box.
Give your customers a new reason to love their local. Our pilot model pairs free grounds pickup with café-branded kits on consignment: a new counter offering, without buying inventory upfront.
Get to know GroundloopClose the coffee loop
Your next coffee story
starts in the kitchen.
Less waste. More wonder. Make room on your counter for something worth watching.
Find your grow kit