Meaning
唐墨 (からすみ, Karasumi) is Karasumi, a Japanese food (fish eggs, ingredients).
What is Karasumi?
Karasumi is a food product made by salting mullet roe and drying it in sunlight. It is a high priced delicacy and it is eaten while drinking sake . Karasumi is a speciality of Nagasaki. Mullet are fish in the family Mugilidae.