Taichi Takeuchi, 36, managing director of katsuobushi factory Takeuchi Ltd, displays dried katsuobushi, in Usa Town, Tosa, Kochi Prefecture, Japan, May 16, 2022. Katsuobushi (smoke-dried katsuo) is essential to Japanese cuisine, but the number of its manufacturers in Kochi has plunged in forty years from dozens to only a few. "I'm really unsure if we can continue this," said Takeuchi. REUTERS/Kim Kyung-Hoon