I like both the flavor and the social rituals associated with tea, but I don't want to consume caffeine on a regular basis, so I only drink it rarely. And I don't like many of the popular herbal teas.
I recently indulged in a cup of flavored tea in a Turkish style tea salon, then switched to flavored rooibos. And then I realized why the rooibos wasn't cutting it for me, despite all the added sugar and flavor: I was missing the tannins from the real stuff. I generally like astringent, even bitter tastes, and it is probably what makes tea tasty for me.
What herb will give me a substitute for tea such that
- it has no caffeine and similar stimulants (I don't care about arguments how chirality makes theine different from caffeine)
- it has tannins or other sources of astringent flavor
- but without having too assertive flavor of its own (for example, I drink wormwood tea sometimes, but it is heavy stuff and not really versatile)?