Kirimu Grimoire ★★★★

Taken all the way down to base materials, one Kirimu Grimoire is 2 crafting steps deep and needs 3 intermediates — Wootz Ingot ×3, Kirimu Leather ×2 and Enchanted Platinum Ink ×1 — which resolve to 9 distinct raw materials totalling 19 units, plus 29 crystals.

That bill outweighs 7,589 of the 13,602 recipes tracked here and 1,272 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 25 are burned by the intermediates, so the real crystal cost is 10 Earth Cluster, 6 Fire Cluster, 5 Water Cluster and 2 other kinds.

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

1 of the 9 raw materials come out of the ground, and one of them is time-gated: Platinum Ore (4:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Kirimu Leather has the widest use: 105 recipes call for it, spanning six of the eight crafting classes.