Practice JLPTMeaning
口子 (くちこ[?], Kuchiko) is Kuchiko — a Japanese food (viscera).
What is Kuchiko?
Kuchiko are the gonads of sea cucumbers. The gonads are located slightly under the mouth, so they are commonly called " kuchiko ". The sea cucumber reaches its breeding season from January to March when it is deep winter. The gonads then develop and enlarge. They are also known as hochiko[?] and bachiko[?] . Kuchiko usually is formed in flat triangular shapes and dried.