Hallowed Chestnut Fishing Rod

Taken all the way down to base materials, one Hallowed Chestnut Fishing Rod is 3 crafting steps deep and needs 5 intermediates — Hardsilver Ingot ×2, Hallowed Chestnut Lumber ×1, Hallowed Water ×2 and 2 others — which resolve to 7 distinct raw materials totalling 31 units, plus 41 crystals.

That bill outweighs 10,578 of the 13,602 recipes tracked here and 1,086 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 9 of those crystals go into the final step; the other 32 are burned by the intermediates, so the real crystal cost is 32 Wind Crystal, 5 Water Crystal and 4 Ice Crystal.

The chain crosses three disciplines — Carpenter to Lv 57, Alchemist to Lv 56 and Goldsmith to Lv 56 — so no single class can finish it unaided.

All 7 raw materials are gathered, and one of them is time-gated: Abalathian Mistletoe (6:00, 18:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Hardsilver Ingot has the widest use: 117 recipes call for it, spanning seven of the eight crafting classes.