There seem to be many photos of Palo Azul online, a fluorescent tea made from bark. <a href="https://palo-azul.com/en/blogs/palo-azul-blogs/why-is-palo-azul-blue-fluorescent" rel="nofollow">https://palo-azul.com/en/blogs/palo-azul-blogs/why-is-palo-a...</a> has some interesting photos. Is this the same thing as Lignum Nephriticum?