Raw sardine

Ironman verdict

At least 7 monsters drop it. The easiest is Crassian scout (level 7, 6/51); the best rate is Dagannoth (Lighthouse) (level 77), at 4/128, about one every 6 kills. You can also make it yourself: it takes 5 Fishing and gives 20 Fishing XP, using 1 × Fishing bait. Other sources include Thalassus, Fishing spot (small fishing net, bait), Ghotistix and Boulder crab. Making ten takes 10 × Fishing bait and gives 200 Fishing XP. Reaching level 5 Fishing takes 388 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 sardine, including Doogle sardine, Raw trout and Sardine. Raw sardine 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 6 coins, which is 4 less than the shop price, so buying it to alch does not pay.