Rooibos tea can be brewed as a hot tea or as an iced tea. Thanks to its high concentration of vitamins and polyphenols, rooibos tea offers not only delicious taste, but also helps to keep you healthy. Rooibos tea is also caffeine-free, making it a good beverage at any time of the day. It brews into a reddish-brown hue as visually stunning as it is tasty. It's often described as having a neutral, yet sweet flavor profile that can be enhanced with slices of lemon or a dash of honey. Rooibos has a light mouth feel that is subtle and not overpowering. Rooibos tea has a sweet, nutty flavor that is often compared to hibiscus tea and earthy notes that are similar to yerba mate infusions. Rooibos is also described as having hints of caramel, vanilla and a smoky essence likened to tobacco. Green rooibos tea is unoxidized and has similar flavor characteristics to green tea. Red rooibos tea is oxidized and tastes more similar to black tea and oolong tea. There are two types of rooibos tea: red rooibos and green rooibos. Rooibos is grown mainly in the mountainous Cederberg region of South Africa in the Western Cape province. The Aspalathus linearis plant is native to South Africa and like most teas, contains high levels of polyphenols that provide an array of health benefits. Rooibos tea is made using the long needle leaves of the plant, which are green when still growing on the plant and turn red during the fermentation process. Rooibos means “red bush” in Afrikaans and references the rich, deep crimson of rooibos tea. Rooibos tea-also known as red bush tea and African red tea-is an herbal tea made using the leaves of the Aspalathus linearis plant. Rooibos tea does not contain any leaves from the Camellia sinensis tea plant so it is not a true tea. For all intents and purposes, red tea in the Western world refers to rooibos tea. This is because in China, the term red tea is used to describe traditional black tea. When ordering red tea, you may be surprised to find that sometimes you end up with a black tea instead of rooibos tea depending what region you are in. With powerful antioxidant and anti-inflammatory properties, drinking a cup of rooibos tea every day can help you stay healthy. Rooibos tea, also known as red tea, is unique in that it is grown mainly on the African continent and contains polyphenols such as aspalathin that are not found in any other foods. Rooibos tea contains antioxidants, enzymes, and chemical compounds that help skin look youthful, reduce inflammation that causes pain, and prevent serious illness. In this review article, we highlight the potential of frass from BSF larvae treatment of biodegradable waste in the world market regarding its possible use as a fertilizer, summarize recent results with this novel product and point towards future research perspectives.Rooibos tea (pronounced ROY-boss) is less well known than its true tea cousins, but it has excellent health benefits and a delicate flavor that is sweet and aromatic. However, many aspects related to frass are still unknown, such as its varying composition of nutrients, microorganisms and bioactive compounds, its post-processing requirements for improved biological stabilization, its behavior in the soil and action in the plants’ metabolism, among other aspects. The processing residues of the treatment (frass) is constantly generated in waste management facilities in large volumes, and this product can be used as an organic fertilizer in agriculture, stimulating a transition to a circular economy. Waste treatment with larvae of the black soldier fly (BSF, Hermetia illucens) complies with the concepts of circular economy, as it enables the transformation of these wastes into marketable products, closing loops and promoting circularity. Inadequately treated biodegradable waste is considered an environmental, social and economic threat worldwide, which call for great attention.
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