This is SCOBY (Symbiotic Colony Of Bacteria and Yeast).
It is often used as a bio-leather and these are some of the explorations I did during a workshop at ELISAVA (while doing my Master´s Degree).
"The process of transforming SCOBY into bioleather is just a drying process"
We poured in some tea with sugar plus activated bacteria culture so then the process of fermentaion begins. A layer starts to grow on the top (the scoby) and this is what we will dehydrate into a bioleather!