Roasted Mate Chai with its heady blend of Brazilian mate, black tea, and rich spices has a taste and oomph that will make you stand up and say “WOOHA!” The kick comes from the caffeine content of mate, sometimes called matteine, which is generally higher than that of black tea. 
**In South America, Mate is normally consumed in a special hollow gourd sipped through a stainless steel straw, frequently elaborately decorated and quite beautiful, and passed from person to person.