Rainbow Spoon Lure

Taken all the way down to base materials, a batch of 3 Rainbow Spoon Lure is 2 crafting steps deep and needs 1 intermediate — Cobalt Ingot ×1 — which resolves to 3 distinct raw materials totalling 4 units, plus 16 crystals.

That bill outweighs 3,935 of the 13,602 recipes tracked here and 504 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 11 of those crystals go into the final step; the other 5 are burned by the intermediates, so the real crystal cost is 10 Fire Shard and 6 Wind Shard.

The chain crosses two disciplines — Goldsmith to Lv 46 and Blacksmith to Lv 42 — so no single class can finish it unaided.

All 3 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.