Serpentskin Thighboots of Healing

Taken all the way down to base materials, one Serpentskin Thighboots of Healing is 4 crafting steps deep and needs 10 intermediates — Amphiptere Leather ×2, Grade 1 Mind Dissolvent ×1, Hallowed Ramie Cloth ×1 and 7 others — which resolve to 14 distinct raw materials totalling 38 units, plus 50 crystals.

That bill outweighs 11,698 of the 13,602 recipes tracked here and 1,745 of the 1,844 Leatherworker ones, and 1 recipe nests deeper.

Only 10 of those crystals go into the final step; the other 40 are burned by the intermediates, so the real crystal cost is 15 Earth Crystal, 9 Fire Crystal, 9 Lightning Crystal and 4 other kinds.

The chain crosses four disciplines — Leatherworker to Lv 59, Alchemist to Lv 56, Blacksmith to Lv 56 and Weaver to Lv 56 — so no single class can finish it unaided.

12 of the 14 raw materials come out of the ground, and 2 of them are time-gated: Abalathian Mistletoe (6:00, 18:00) and Volcanic Rock Salt (17:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Rubber has the widest use: 191 recipes call for it, spanning four of the eight crafting classes.