'Bitter' is not exactly the taste I feel when I drink this mate. (Pretty much all the mate varieties are bitter in one way or another.) So I would say this mate is bitter to acrid taste. It is quite palatable, however, and may be to someone's liking as, say, hot chili are. I am still getting used to the taste and for now mixing it with milder types of mate. I will be buying this product now and then, to bring variety.