Militia Mortar ★

Taken all the way down to base materials, one Militia Mortar is 2 crafting steps deep and needs 2 intermediates — Darksteel Nugget ×2 and Spruce Lumber ×1 — which resolve to 2 distinct raw materials totalling 9 units, plus 14 crystals.

That bill outweighs 5,492 of the 13,602 recipes tracked here and 597 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 5 of those crystals go into the final step; the other 9 are burned by the intermediates, so the real crystal cost is 9 Fire Crystal, 3 Wind Crystal and 2 Earth Crystal.

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

Both raw materials are gathered, and 2 of them are time-gated: Darksteel Ore (1:00) and Spruce Log (9:00). The widest gap between consecutive opening times is 16 Eorzean hours, about 47 real-world minutes.

Of the intermediates, Darksteel Nugget has the widest use: 121 recipes call for it, spanning seven of the eight crafting classes.