Bitter leaf (*Vernonia amygdalina), native to tropical Africa, is a shrub known for its distinct bitter taste and significant use in traditional medicine and cuisine, particularly in soups like Onugbu. It's packed with vitamins (A, C, E), minerals (iron, calcium, zinc), antioxidants, and compounds like quinine, offering benefits such as boosting immunity, supporting liver health, regulating blood sugar, and aiding digestion, though its bitterness needs washing out.