My main example is rooibos because at least it can make espresso-like strong brews, and is sold at some coffee shops here and there. But I personally prefer Mate too, though for cold drinks :-) And if I’m just in for some caffeine, black tea is the easiest to source (around here). Matcha latte is also growing in popularity! As well as London Fog.

I love all of these, but I’m one of those tea-adventurous coffee drinkers who care about the taste more than the caffeine.