Dwarven Cotton Jacket

Taken all the way down to base materials, one Dwarven Cotton Jacket is 3 crafting steps deep and needs 4 intermediates — Dwarven Cotton ×2, Sea Swallow Leather ×1, Stonegold Nugget ×1 and 1 other — which resolve to 5 distinct raw materials totalling 22 units, plus 44 crystals.

That bill outweighs 8,402 of the 13,602 recipes tracked here and 1,106 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 30 are burned by the intermediates, so the real crystal cost is 24 Lightning Crystal, 13 Wind Crystal and 7 Earth Crystal.

The chain crosses three disciplines — Weaver to Lv 80, Leatherworker to Lv 78 and Goldsmith to Lv 71 — so no single class can finish it unaided.

4 of the 5 raw materials come out of the ground, and one of them is time-gated: Gold Ore (9:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Dwarven Cotton has the widest use: 165 recipes call for it, spanning eight of the eight crafting classes.