A natural eel which lives in a river or pond is more elastic than a farmed or imported eel even after being steamed and broiled, and its taste more enjoyable due to its chewable nature.
川や沼等に生息する天然産のウナギは養殖や輸入した物に比べて蒸した後に蒲焼にしても弾力があり、噛むほどに滋味を愉しめるほどの歯ごたえがある。