What organ is primarily affected by bitter tastes according to Traditional Chinese Medicine?

In Traditional Chinese Medicine (TCM), the organ primarily associated with bitter tastes is the Heart. Bitter flavors are believed to have a specific influence on the Heart's function and emotional wellbeing. This connection stems from the idea that the Heart governs blood circulation and emotional health, and the bitter taste is thought to promote the Heart's ability to cool excess heat and nourish the body's Yin.

Additionally, the qualities of bitter foods and herbs, such as their ability to help clear heat and dry dampness, are linked to the Heart's management of emotional and physical balance. Therefore, the Heart's relationship with the bitter flavor aligns with TCM principles that emphasize the importance of flavors in not only diet but also treatment and diagnosis of conditions within the body.