It sounded from the methods section like a random paper teabag from the store. It wouldn’t surprise me at all if the manufacturing world had moved from paper to some kind of engineered cellulose bioplastic… but I always thought of those more in the context of rayon, and those horrible “bamboo” textiles and foams. (Versus linen made from bamboo fibers, which is lovely :)

Are there other processes that work out cheaper than paper for teabag kind of applications these days?