This is freeze-dried miso soup. The freeze-dried miso is in powder form, so you can just pour it into a bowl and it will dissolve immediately when you pour in hot water, spreading the rich aroma of the miso and dashi. 
Nagatanien's "Freeze-Dried Hiruge 8 Pack" is a powdered instant miso soup that uses rich soybean miso and contains ingredients such as wakame seaweed, fu (wheat gluten), and green onions. The vacuum freeze-drying (freeze-drying) method allows the rich aroma of the miso and dashi to quickly dissolve in hot water, allowing you to easily enjoy the taste of authentic red dashi soup. As it is in powder form, you can easily prepare it by just pouring hot water over it and pouring it into a bowl.

Product specifications for Nagatanien Freeze-dried Hiruge 8 bags [Instant miso soup]