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 Yuuge 8 Pack" is a powdered instant miso soup made with mellow-tasting white miso as a base, and ingredients such as wakame seaweed, fu (wheat gluten), and dried green onions. The freeze-drying method allows the rich aroma of the miso and dashi to dissolve quickly in hot water, allowing you to easily enjoy the authentic taste of white miso. Just pour it into a bowl and pour in hot water, and you can easily cook it in a variety of situations, such as busy mornings, when you're packing your lunch, or when you're traveling.

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