1, the color is different: soy sauce color is lighter, reddish brown. Old soy sauce is added caramel color, color is very dark, brown and shiny.

2, the flavor is different: soy sauce is used for general cooking, soy sauce tastes more salty. After eating in the mouth there is a kind of fresh and slightly sweet feeling.

3, the use of different: soy sauce is used for seasoning, because the color is light, so do the general stir-fry or cold dishes when used more. Old soy sauce is generally used to give food coloring. For example, to do braised dishes that need to be colored when used better.

Expanded Information:

Soy sauce is the most common type of soy sauce. p>Soy sauce is evolved from the sauce, as early as three thousand years ago, China's Zhou Dynasty, there are records of making sauce, and the invention of the ancient Chinese working people of soy sauce of brewing is purely accidental discovery of the ancient Chinese emperor of the condiments, the earliest soy sauce is made from fresh meat marinated in, and nowadays, the process of making fish sauce is similar.

Because of the excellent flavor gradually spread to the people, and later found that soybeans made of similar flavor and cheaper, and then widely spread for consumption, and early with the spread of Buddhist monks around the world, such as Japan, Korea, Southeast Asia, the manufacture of soy sauce in China.

Early is a kind of family art and secret, its brewing more by a certain master, its technology is often by the children and grandchildren from generation to generation or by a school of masters to pass on, the formation of a certain way of brewing method.