Holding your face over a hot cup of tea may open your nasal passages, but the steam isn’t the only thing that’s beneficial. The menthol in peppermint tea, for instance, seems to work as a decongestant and expectorant, meaning it can break up mucus and help clear it out of your nose and throat.
Similarly, green tea contains a compound (methylated epigallocatechin gallate) that has been shown in lab tests to have antioxidant properties that inhibit allergic reactions. These results may not necessarily translate into noticeable symptom relief for spring allergy sufferers, however.
If you do have spring allergies, you’ll probably want to stay away from chamomile, as it can cause reactions in people allergic to ragweed.