Saigawa River Flowing Near the Tonburi (Field Caviar) Processing Factory

Good spring water is essential for processing Tonburi (field caviar). The clear water from the mountain also flows into the nearby Saigawa River. The clear water from the mountain also flows into the nearby Saigawa River. Hinai area, Odate City, where many tonburi are cultivated, soil is well drained and is the best environment for tonburi cultivation.