These are frozen oysters for raw consumption from Hyogo, Japan. As a feature of oysters in the shell, the biggest difference from other production areas is the large difference in the yield of the edible part. The edible portion of the oysters from other regions accounts for 20-25% of the total weight, while the Harimanada oysters account for 30-35%. *In-house research When you open the shell, the oystermeat is tightly packed.