Quercetin powder generally has a bitter taste. It can be described as slightly acidic, with a sharp, tangy flavor that may be reminiscent of citrus fruits or tart berries. Some individuals find the taste of quercetin powder to be quite strong and unpleasant when consumed on its own. However, it's commonly taken in capsule or tablet form to mitigate the taste, or it can be mixed into smoothies, juices, or other beverages to mask the flavor.