Aesthete's Boots of Crafting ★★★

Taken all the way down to base materials, one Aesthete's Boots of Crafting is 2 crafting steps deep and needs 3 intermediates — Megalania Leather ×4, Defthand's Dissolvent ×3 and Cobalt Alloy Ingot ×1 — which resolve to 8 distinct raw materials totalling 48 units, plus 36 crystals.

That bill outweighs 12,691 of the 13,602 recipes tracked here and 1,815 of the 1,844 Leatherworker ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 12 Earth Cluster, 10 Wind Cluster, 6 Lightning Cluster and 2 other kinds.

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

3 of the 8 raw materials come out of the ground, and 3 of them are time-gated: Ashen Alumen (10:00, 22:00), Fireheart Cobalt (2:00, 14:00) and 1 other. The widest gap between consecutive opening times is 8 Eorzean hours, about 23 real-world minutes.

Of the intermediates, Cobalt Alloy Ingot has the widest use: 55 recipes call for it, spanning five of the eight crafting classes.