Shudh Online Alkanet root better known as Ratan jot / Ratan Joth is traditionally used to add color to Indian food. It is the original natural food coloring that gives the famous Kashmiri dish rogan josh its signature red color. ly these days artificial food colors have replaced ratan jot in tandoori chicken and the traditional Kashmiri rogan josh has been butchered with the use of tomatoes. It is also known as Ratan joot Onosma Orchanet Alkanna Tinctoria Vembalam Pattai Alkanet vempalaá¹ paá¹á¹Äyi vembaalam pattee Vembalaá¹ paá¹á¹Äyi Laljari Vembalam pattai Baal Jad Buge Azuree Yatilung Laljari Maharanga Thavittu vembala Dyerâs bugSpanish BugLaedoc Bug. Shudh Online products are selectively sourced with great emphasis on purity and authenticity and are 100% natural ayurvedic products. We don't add any or additives in the product and using our product will get you closure to nature.