One of the mainstays of Setsubun is eating ehomaki, a very, very thick sushi roll filled with a bunch of different ingredients. The tradition originated in Kansai but has now spread across the country, and generic supermarkets and convenience stores now all sell ehomaki around this time of the year. This hearty slab of rice, seafood and veg is getting the spotlight at Tokyo Station, where about 50 different types will be on offer in various shops inside the complex. Over the first three days of February, you'll be able to enjoy a specific limited-edition version at each participating shop, from ones using exclusive ingredients such as gold flakes and beef tongue, to Thai-style and steamed-bread-in-lieu-of-rice versions. If you're looking to compare flavours, know that half-size rolls are on offer too, and if you need to satisfy your sweet tooth after all that savoury goodness, check out the ehomaki-inspired roll cakes.