Many homes, many tastes
This is a shop selling miso in a classic style. Many miso shops used to sell miso in this way in those days, but now individually packed misos are sold at supermarkets. Miso are slightly different from one area to another, like Japanese sakes.
By the way, miso soup made by blended miso is more delicious than that made by single one, I hear. The taste of miso soup are mainly composed of miso, dashi or umami and ingredients. Many homes, many tastes.