Camas Prairie Tea Organic (Rene Caisse's Original Formula) by Trout Lake Farm Organic Herbs 4 oz Tea Essiac tea originated in the early 1920s when a Canadian nurse named Rene Caisse (essiac is Caisse spelled backwards) received the formula from a patient who acquired the recipe from an Ojibwa medicine man. She went on to use the essiac tea formula for many years with positive results. Nurse Caisse passed away in 1978 but her essiac tea recipe remains to be appreciated by all who use it. Trout Lake Farm began manufacturing Camas Prairie Tea in 1994. At the time of its conception it was known as Caisses Herbal Tea. Although this new venture was a departure from Trout Lake Farms roots in farming supplying raw materials we felt that it was important to introduce a reasonably-priced but high-quality alternative to the more expensive essiac products in the marketplace. Three of the ingredients Burdock Sheep Sorrel and Rhubarb were already being grown on our farm. We sourced the Slippery Elm