Artisan's Mortar ★★★

Taken all the way down to base materials, one Artisan's Mortar is 3 crafting steps deep and needs 4 intermediates — Cobalt Ingot ×1, Treated Spruce Lumber ×1, Wolfram Ingot ×1 and 1 other — which resolve to 7 distinct raw materials totalling 27 units, plus 18 crystals.

That bill outweighs 9,763 of the 13,602 recipes tracked here and 1,123 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 15 are burned by the intermediates, so the real crystal cost is 6 Wind Crystal, 5 Fire Shard, 4 Fire Cluster and 2 other kinds.

The chain crosses two disciplines — Blacksmith to Lv 50 and Carpenter to Lv 50 — so no single class can finish it unaided.

4 of the 7 raw materials come out of the ground, and 2 of them are time-gated: Ferberite (3:00) and Spruce Log (9:00). The widest gap between consecutive opening times is 18 Eorzean hours, about 53 real-world minutes.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.