Cashmere Hat of Casting ★★★

Taken all the way down to base materials, one Cashmere Hat of Casting is 3 crafting steps deep and needs 5 intermediates — Terminus Putty ×2, Cashmere Cloth ×1, Hippogryph Leather ×1 and 2 others — which resolve to 8 distinct raw materials totalling 25 units, plus 16 crystals.

That bill outweighs 9,313 of the 13,602 recipes tracked here and 1,219 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 13 are burned by the intermediates, so the real crystal cost is 5 Lightning Cluster, 3 Earth Crystal, 3 Lightning Crystal and 2 other kinds.

The chain crosses three disciplines — Weaver to Lv 50, Alchemist to Lv 50 and Leatherworker to Lv 50 — so no single class can finish it unaided.

3 of the 8 raw materials come out of the ground, and one of them is time-gated: Silkworm Cocoon (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Silk Thread has the widest use: 175 recipes call for it, spanning six of the eight crafting classes.