Furfural is an organic compound derived from agricultural byproducts, primarily from the hydrolysis of pentosans found in plant materials. It is a colorless liquid with a characteristic almond-like odor. Furfural is used as a solvent, in the production of resins, and as a precursor for various chemicals. In food, it can be found in small amounts in roasted coffee, bread, and some spices, contributing to flavor and aroma. Its sensory characteristics include a sweet, nutty flavor, making it significant in culinary applications. Additionally, furfural has potential health benefits, including antioxidant properties, but its safety must be considered due to its toxicity at higher concentrations.