Bliss of Earth Stone Flowers also called as patthar ke phool or dagad phool in hindi is one of the most unusual spices in the indian repertoire. it is a rare dried flower and a dominant spice in all Chettinad preparations. Also known as kalpasi, stone flower is a soft brownish and black coloured lichen that gives the signature black color to various cuisine. It has a strong earthy atom and a very dry, light fluffy texture and fell to it. It is widely use in chettinad cuisine and to some extent in Hyderabadi and Marathi cuisine.