Rarefied Titanium Mortar

Taken all the way down to base materials, one Rarefied Titanium Mortar is 2 crafting steps deep and needs 2 intermediates — Titanium Nugget ×3 and Dark Chestnut Lumber ×1 — which resolve to 4 distinct raw materials totalling 26 units, plus 26 crystals.

That bill outweighs 9,543 of the 13,602 recipes tracked here and 1,087 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 16 are burned by the intermediates, so the real crystal cost is 17 Fire Crystal, 5 Earth Crystal and 4 Wind Crystal.

The chain crosses two disciplines — Blacksmith to Lv 58 and Carpenter to Lv 54 — so no single class can finish it unaided.

All 4 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, Titanium Nugget has the widest use: 112 recipes call for it, spanning six of the eight crafting classes.