DMT and 5-MeO-DMT, which can be extracted from the leaves. The concentration of these chemicals varies over the year. The content of 5-MeO-DMT rises during the summer and the content of DMT instead rises during the winter. In South Africa, Delosperma cooperi is used for preparation of khadi, an alcoholic wine. The plant's roots are known to be involved in the process of fermentation but the leaves are the important source for the production of khadi. There is no scientific evidence behind claims of medicinal benefits. It is known that the interaction of the plant during the fermentation process results in chemical components to change, which converts sugar to oxalic acid and is extremely toxic when ingested. The plant is also used among the Bantu and the Europeans as yeast source for making beer. Sources Leistner, O. A. (ed.). 2000. Seed plants of southern Africa: families and genera. Strelitzia 10. National Botanical Institute, Pretoria. Smith, G. F.; Chesselet, P.; Van Jaarsveld, E. J.; Hartmann, H.; Hammer, S.; Van Wyk, B.-E.; Burgoyne, P.; Klak, C.; & Kurzweil, H. 1998. Mesembs of the world. Briza Publications, Pretoria. References cooperi Entheogens Taxa named by Louisa Bolus Taxa named by Joseph Dalton Hooker