Raw swordfish

Ironman verdict

At least 9 monsters drop it. The easiest is Brine rat (level 43, 2/128); the best rate is Unspeakable horror (elite) (level 112), at 10/128, about 2.3 per kill. You can also make it yourself: it takes 50 Fishing and gives 100 Fishing XP. There are 2 other recipes below. Other sources include Fishing Trawler, Granite lobster, Ibis and Managing Miscellania, plus 4 more listed below. Reaching level 50 Fishing takes 101,333 XP in total; the Fishing calculator counts the actions and materials to any target, and the Fishing guide has the Ironman training route. 3 recipes use Raw swordfish, including Good locator, Swordfish and Swordfish fish-head. Raw swordfish is available on free-to-play worlds too. It is tradeable on normal accounts, but an Ironman cannot use the Grand Exchange or trade for it, so the sources on this page are the whole list. High Alchemy turns one into 204 coins, which is 136 less than the shop price, so buying it to alch does not pay.