Erva and Yerba Mate consist of the same components: leaves, branches, and leaf powder.
The yerba mate is fresh and green, and that's how it tastes. It's drunk directly after drying; the fresher, the better. This way of drinking fresh yerba mate is mainly found in Brazil.
The yerba mate is ripe and greenish-gray, with a slightly hay-like...more bitter taste. After harvesting and drying, it is stored for at least 12 months. This type of aged mate tea is primarily found in Argentina, Uruguay, and Paraguay.