‘辅料’ literally combines 辅 (fǔ), meaning ‘to assist’ or ‘auxiliary’, and 料 (liào), meaning ‘ingredient’ or ‘material’. Together, it refers to secondary or supporting ingredients used in cooking, medicine, or manufacturing—not the main component, but added for flavor, texture, color, preservation, or therapeutic enhancement. In culinary contexts, 辅料 often includes herbs, spices, sauces, garnishes, or thickeners; in traditional Chinese medicine, it may refer to adjuvant herbs that moderate or direct the action of principal herbs.

This term is common in professional kitchens, food labeling, herbal prescriptions, and food science. Unlike the core ingredient (主料, zhǔliào), 辅料 plays a supporting role—yet its selection significantly affects quality and balance. It’s neutral in register and widely understood across formal and informal settings, though rarely used in casual daily speech without context like ‘cooking’ or ‘medicine’.