There seem to be many photos of Palo Azul online, a fluorescent tea made from bark. https://palo-azul.com/en/blogs/palo-azul-blogs/why-is-palo-azul-blue-fluores

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