Neo-Ishgardian Boots of Healing ★★★

Taken all the way down to base materials, one Neo-Ishgardian Boots of Healing is 3 crafting steps deep and needs 5 intermediates — Grade 3 Mind Alkahest ×2, Megalania Leather ×2, Dwarven Cotton ×1 and 2 others — which resolve to 10 distinct raw materials totalling 29 units, plus 27 crystals.

That bill outweighs 10,170 of the 13,602 recipes tracked here and 1,478 of the 1,844 Leatherworker ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 23 are burned by the intermediates, so the real crystal cost is 8 Wind Cluster, 7 Lightning Crystal, 6 Earth Cluster and 3 other kinds.

The chain crosses four disciplines — Leatherworker to Lv 80, Alchemist to Lv 80, Carpenter to Lv 80 and Weaver to Lv 78 — so no single class can finish it unaided.

5 of the 10 raw materials come out of the ground, and 3 of them are time-gated: Ashen Alumen (10:00, 22:00), Imperial Fern (0:00, 12:00) and 1 other. The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

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