That's tisane/herbal-tea - not "tea" per-se, you can make infusion like this from pretty much anything. Tea has more caffeine than coffee by dry weight. It also

That's tisane/herbal-tea - not "tea" per-se, you can make infusion like this from pretty much anything. Tea has more caffeine than coffee by dry weight. It also depends how long you infuse it, you can easily have a cup of tea that has more caffeine than cup of coffee.