Birch Fishing Rod

Taken all the way down to base materials, one Birch Fishing Rod is 3 crafting steps deep and needs 4 intermediates — Aurum Regis Nugget ×2, Birch Lumber ×1, Chimerical Felt ×1 and 1 other — which resolve to 8 distinct raw materials totalling 27 units, plus 25 crystals.

That bill outweighs 9,763 of the 13,602 recipes tracked here and 1,005 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 3 of those crystals go into the final step; the other 22 are burned by the intermediates, so the real crystal cost is 15 Wind Crystal, 5 Lightning Crystal, 2 Water Shard and 2 other kinds.

The chain crosses four disciplines — Carpenter to Lv 60, Goldsmith to Lv 58, Weaver to Lv 58 and Alchemist to Lv 25 — so no single class can finish it unaided.

6 of the 8 raw materials come out of the ground, and one of them is time-gated: Gold Ore (9:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Aurum Regis Nugget has the widest use: 185 recipes call for it, spanning seven of the eight crafting classes.