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Cyclopia intermedia E. Mey. - Fabaceae
honeybush, Honigbusch

Subshrub endemic between Port Elizabeth and the edge of the Langkloof in South America; leaves trifoliate, yellowish green; flowers bright yellow… The leaves of honeybush are commonly used to make herbal teas (healthy beverage) considered antioxidant.
http://en.wikipedia.org/wiki/Cyclopia_%28plant%29
[Medicinal Plants of the World. Ben-Erik Van Wyk and Michael Wink, Pretoria 2004, 119]

„The fermented leaves and stems of Cyclopia intermedia are used to brew Honeybush tea, a herbal tea indigenous to South Africa. The plant is also used to manufacture a sweet herbal infusion used for restorative properties such as soothing coughs and alleviating bronchial complaints including tuberculosis, pneumonia, and catarrh. It is claimed to have a low tannin content and no caffeine and contains various antioxidants. Continued investigations into the phenolic content of the leaves and stems of C. intermedia yielded tyrosol and a methoxy analogue,… five glycosylated flavonols, two isoflavones, four flavanones, two isoflavones, and two flavones.“
[Kamara, B. I., Brandt, E. V., Ferreira, D., & Joubert, E. (2003). Polyphenols from honeybush tea (Cyclopia intermedia). Journal of Agricultural and Food Chemistry, 51(13), 3874-3879.]

„Honeybush or Cyclopia intermedia is a short, woody shrub grown in the mountain slopes of the Langkloof district between the Eastern and Western Cape regions of South Africa. Unlike other herbal teas, honeybush is not widely cultivated and most of the commercially available product is collected from natural plant populations. The leaves, stems and flowers of the plant are harvested for use in making an herbal tea infusion, which is variously called Heuningtee, Bergtee, Boertee, Bossiestee and Bush tea. Upon harvesting the plant material is cut to disrupt cellular integrity, fermented in either a curing heap or at elevated temperatures in a preheated baking oven, and then allowed to dry. During the fermentation process, the plant material changes color from green to dark brown as the phenolic compounds are oxidized…
After 72 h of fermentation, du Toit and Joubert (1998) found significant reductions of 26% in the concentration of total polyphenols compared with the amount present at 24 h (129.2 vs 95.6 g/kg soluble solids), of 32% in flavonoids over the same time period (92.0 vs 62.2 g/kg soluble solids) and of 60% in the tannin content (40.1 vs 16.0 g/kg soluble solids)… honeybush tea extracts prepared from fermented plant materials containing the flowers had significantly less total polyphenols, but more favorable organoleptic properties including a sweeter aroma, flavor and better quality overall.“
[A review of the bioactivity of South African herbal teas: rooibos (Aspalathus linearis) and honeybush (Cyclopia intermedia). McKay, Diane L., and Jeffrey B. Blumberg., Phytotherapy Research Vol.21(1), 2007, 1-16]