Have you heard of or tried adding salt to your coffee to improve its flavor? I was introduced to the notion of adding salt to reduce bitterness in reference to dark chocolate. A certain level of bitterness is desirable in dark chocolate, as in coffee, but too much can be overwhelming. The solution? Add a little salt! The sodium ion reduces bitterness by interfering with the mechanism by which you detect a bitter flavor. You do not need to add a large amount of salt, either. Try a taste-test at home, brewing a pot of coffee with a just a pinch of salt. Feel free to post your results here.
Another chemical with a bitter flavor is quinine, which is found in tonic water
and is used in glow-in-the-dark drink recipes. In addition to its antimalarial properties, quinine gives tonic water drinks their characteristic flavor.
Salt in Coffee | Glow in the Dark Ice