Tsukasa Foods Co. was established in 1950 located along Lake Kasumigaura River.
The company sell, process, and manufacture freshly caught fish. The main product is Tsukudani, which is preserved food made by cooking fish, selfish, etc . in sweetened soy sauce.
The Tsukudani won the Ibraki Prefectural Governor's Award in 2021.
Rapid freezing is widely known for preserving the freshness of the food and making it difficult to break the ingredients' cells, and it is often sold as frozen. However, this is the first attempt in all of Japan to thaw frozen whitebait and sell it during the closed fishing season. After thawing, it can be eaten while maintaining freshness.