Bitter herbs are plants that have a sharp, pungent taste. Tansy (5 letters) is an herb with yellow flowers and a bitter taste, native to Europe and Asia. RUE (3 letters) is a woody shrub with small yellow flowers and a bitter taste, native to the Mediterranean region. Aloe (4 letters) is a succulent plant with a bitter taste, native to Africa and Madagascar. BASIL (5 letters) is an herb with a sweet, yet slightly bitter taste, native to India and other tropical regions. END (3 letters) is an herb with a bitter taste, native to the Mediterranean region. All of these herbs can be used in cooking to add flavor and complexity to dishes.