Resumen
Indonesia is a tropical country where many communities work as farmers by using fertile soil. One of them is soybeans, soybeans can be processed into various foods and beverages, such as tofu, tempe and soybean juice. There are various methods of soybeans process, so that the quality is also various. Quality is the totality of facilities and characteristics of products or services that meet the needs, expressed or implied (Loh, 2001: 35). One of the most favorite foods of Indonesian people is tofu.