Onishi Kasa ★★★

Taken all the way down to base materials, one Onishi Kasa is 3 crafting steps deep and needs 5 intermediates — True Linen ×6, Veteran Tree Sap ×2, Worsted Yarn ×1 and 2 others — which resolve to 11 distinct raw materials totalling 43 units, plus 30 crystals.

That bill outweighs 12,178 of the 13,602 recipes tracked here and 1,772 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 26 are burned by the intermediates, so the real crystal cost is 12 Lightning Cluster, 8 Wind Cluster, 4 Lightning Crystal and 2 other kinds.

The chain crosses two disciplines — Weaver to Lv 70 and Alchemist to Lv 70 — so no single class can finish it unaided.

5 of the 11 raw materials come out of the ground, and 2 of them are time-gated: Hardened Veteran Tree Sap (4:00, 16:00) and Hingan Flax (2:00, 14:00). The widest gap between consecutive opening times is 10 Eorzean hours, about 29 real-world minutes.

Of the intermediates, Twinthread has the widest use: 109 recipes call for it, spanning six of the eight crafting classes.