Genus Ilex is the only genus in family Aquifoliaceae
of order Aquifoliales. Though containing somewhere between 400
and 600 species, there isn't anything to eat here. Most species in the
family are at least mildly toxic, and some are quite toxic. A few,
however, are used to make caffinated teas.
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Guayusa[Ilex guayusa] This tree, which grows to about 100 feet, is native to the Amazon Rainforest of Ecuador. Natives have long harvested the leaves, tied them into bundles and dried them to use in making a highly caffinated tea. This leaf is now being promoted by the health food industry as yet
another "super food". Powders are being used in a number of formulations.
Aside from caffeine, the leaves contain theobromine, usually found in
chocolate, and substances similar to those found in green tea. They are
also very high in antioxidants, much higher than green tea.
Photo by Anna Premo distributed under license
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Yerba Mate[Yerbe mate (Spanish); Erva mate (Portuguese); Ilex paraguariensis]
This shrub, which can grow to about 49 feet, is native to southern Brazil
and Paraguay. It's leaves are harvested to make a caffinated tea, often
called "mate", which is very popular in the Southern Cone of South
America, particularly Uruguay. It is also popular in Syria and Lebanon,
imported from Argentina.
Details and Cooking
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Kaushue[Ilex kaushue]
This tree, growing to about 28 feet, is native to most of China. Curled
dried leaves are used to make a caffinated bitter tea called Ku Ding Cha,
literally "bitter nails tea", said to have significant medicinal
properties. In Sichuan and Japan this tea is more often made from a
Privet, Ligustrum robustum, in which case it will not be
caffinated.
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