Karasumi is a food product made by salting mullet roe and drying it in sunlight. A theory suggests that it got its name from its resemblance to the blocks of sumi (inkstick) imported from China (Kara) for use in Japanese calligraphy.[1] Karasumi is a high priced delicacy and it is eaten while drinking sake. It is a softer analog of Mediterranean Bottarga.