A new proposal for wall tiles made from mycelium (the root part of mushrooms), this time by the New York studio bioMATTERS. First, organic household waste is ground to make a pasty substrate to which a little yeast is added to initiate the growth of the mycelium. This paste is then 3D printed in the form of a tile, then left to rest for two weeks, the time necessary for the mycelium to grow in this substrate and consolidate it via thousands of fungal filaments. To stop the growth of the mycelium and make it a rigid and light material, the tile is briefly put in an oven. Ultimately, it is decorated by 3D printing with a gel of pigments extracted from the biomass of harvested algae. By this principle, all the tiles are different, they have a soft and silky appearance, in a double tone of light beige and soft green. The tiles are obviously completely biodegradable once back in nature.