No, soy sauce is made from soybeans. Mature yellow sauce is reddish-brown in color, bright and shiny, with sauce and ester aroma, salty and palatable, not acidic, bitter, no other peculiar smell, moderately viscous, no moldy flowers. Sweet noodle sauce, also known as sweet sauce, pasta sauce, is made of flour, water, salt as a raw material for a kind of sauce. Using the amylase secreted by Aspergillus oryzae, a large amount of starch in the flour by evaporation and paste is decomposed into dextrin, maltose and glucose mixture. At the same time, a small amount of protein in the flour is also decomposed into amino acids under the action of protease, Aspergillus oryzae also secretes lipase, pectinase, glutamine-acetylase, peptidase, cellulase and so on, and these enzymes also play a positive role in the formation of the unique flavor of the sauce. In addition, other microorganisms such as yeast, bacteria given to the metabolites produced by fermentation alcohol, organic acids are the source of sauce aroma.