Alpine Open-air Bath

Taken all the way down to base materials, one Alpine Open-air Bath is 2 crafting steps deep and needs 2 intermediates — Annite Whetstone ×5 and Chondrite Ingot ×1 — which resolve to 5 distinct raw materials totalling 41 units, plus 112 crystals.

That bill outweighs 11,923 of the 13,602 recipes tracked here and 1,918 of the 2,216 Goldsmith ones, and 4,464 recipes nest deeper.

Only 64 of those crystals go into the final step; the other 48 are burned by the intermediates, so the real crystal cost is 72 Wind Crystal and 40 Fire Crystal.

The chain crosses two disciplines — Goldsmith to Lv 90 and Blacksmith to Lv 88 — so no single class can finish it unaided.

All 5 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Of the intermediates, Chondrite Ingot has the widest use: 210 recipes call for it, spanning seven of the eight crafting classes.