When you make some sort of soup, it is more delicious to make use of meat or vegetible supply as opposed to simply water.
To make this supply, Koreans commonly make use of anchovy (멸치) or kelp (다시마). Nonetheless anchovy is rather costly as well as it can be a little bit problem to make use of (cutting the head, tail as well as body organ and so on), so I occasionally make use of powdered anchovy rather.
This is a photo of the anchovy powder (멸치가루) I make use of. It is 100% pure anchovy. The rate has to do with 2800 won (United States $2.95)