Which non-seafood item is explicitly listed as a topping for *Tosa Inakazushi* made from pickled stems?
Answer
*Ryukyu* (pickled Indian taro stems)
*Tosa Inakazushi* utilizes mountain delicacies and wild vegetables as primary toppings, reflecting a cuisine born from necessity in inland areas where seafood was sparse. Among the various non-seafood options detailed, *Ryukyu*, which consists of pickled Indian taro stems, is specifically cited as a common topping. Other frequently mentioned vegetable additions include Japanese knotweed (sorrel) pickled in salt, various forms of seasonal bamboo shoots like *Shiho-chiku*, and shiitake mushrooms that have been simmered in a sweet preparation. This combination results in a preparation often recognized as vegan-friendly due to the avoidance of meat, eggs, and seafood.

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