Basic raw supplies for bulk amino acids manufacturer shoyu, as well as foods in general and cash to purchase food have been all in precariously brief supply. Among other issues, there are many sugar-filled conveniences foods: from breakfast cereals, cakes, cookies and sweets to frozen foods for cooking within the microwave. By 1976 it was shown that these new cooking situations considerably affected shoyu yields; also the soybeans started to be cooked in a continuous cooker.