Horse Chestnut Cane

Taken all the way down to base materials, one Horse Chestnut Cane is 3 crafting steps deep and needs 6 intermediates — Ametrine ×2, Horse Chestnut Lumber ×2, Dwarven Cotton ×1 and 3 others — which resolve to 5 distinct raw materials totalling 31 units, plus 77 crystals.

That bill outweighs 10,578 of the 13,602 recipes tracked here and 1,086 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 15 of those crystals go into the final step; the other 62 are burned by the intermediates, so the real crystal cost is 63 Wind Crystal, 7 Ice Crystal and 7 Lightning Crystal.

The chain crosses three disciplines — Carpenter to Lv 81, Goldsmith to Lv 81 and Weaver to Lv 78 — so no single class can finish it unaided.

All 5 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, Dwarven Cotton has the widest use: 165 recipes call for it, spanning eight of the eight crafting classes.