Tonburi are dried seeds from the tree summer cypress, kochia scoparia, a speciality of Akita prefecture. It is often called land caviar or field caviar. The seeds are used in Chinese medicine to help with hypertension, obesity, and urinary diseases. We love using this as a garnish to add an extra pop of texture to soba, mixed into natto, or on top of a cracker with gouda. Gluten-free and vegan friendly!