Calfskin Rider's Jacket ★★★★

Taken all the way down to base materials, one Calfskin Rider's Jacket is 2 crafting steps deep and needs 2 intermediates — Megalania Leather ×3 and Dwarven Mythril Ingot ×1 — which resolve to 5 distinct raw materials totalling 25 units, plus 33 crystals.

That bill outweighs 9,313 of the 13,602 recipes tracked here and 1,283 of the 1,844 Leatherworker ones, and 4,464 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 19 are burned by the intermediates, so the real crystal cost is 7 Earth Crystal, 7 Fire Crystal, 7 Wind Crystal and 2 other kinds.

The chain crosses two disciplines — Leatherworker to Lv 80 and Blacksmith to Lv 78 — so no single class can finish it unaided.

3 of the 5 raw materials come out of the ground, and one of them is time-gated: Ashen Alumen (10:00, 22:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Dwarven Mythril Ingot has the widest use: 168 recipes call for it, spanning seven of the eight crafting classes.