Dwarven Cotton Bandana

Taken all the way down to base materials, one Dwarven Cotton Bandana is 3 crafting steps deep and needs 3 intermediates — Dwarven Cotton ×2, Dwarven Mythril Nugget ×1 and Dwarven Cotton Thread ×7 — which resolve to 3 distinct raw materials totalling 17 units, plus 38 crystals.

That bill outweighs 7,161 of the 13,602 recipes tracked here and 916 of the 1,968 Weaver ones, and 337 recipes nest deeper.

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

The chain crosses two disciplines — Weaver to Lv 80 and Goldsmith to Lv 78 — 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, Dwarven Cotton has the widest use: 165 recipes call for it, spanning eight of the eight crafting classes.