Fukuya Mentaiko — The Original Spicy Cod Roe

**What to buy:** The 'tokusen karashi mentaiko' (premium grade) costs ¥1,800 for 100g but is markedly better than the standard grade. The difference: larger, more intact sacs and a more complex marinade aged an extra 24 hours. **Airport note:** Fukuya has shops at Fukuoka Airport (Domestic Terminal 2F and International 4F). Mentaiko requires refrigeration — pack in your check-in luggage with the ice pack provided, or buy the shelf-stable onigiri version for carry-on. **Pairing suggestion:** Buy mentaiko plus a small ceramic spoon from the adjacent gift shop. Mixed into plain Japanese rice or spread onto warm toast, it transforms a simple meal. **Factory visits:** The Hakata factory (Hakataeki Chikagai) occasionally offers 30-minute production tours (Japanese language) — ask at the counter.