Oasis Cottage Roof (Wood)

Taken all the way down to base materials, one Oasis Cottage Roof (Wood) is 3 crafting steps deep and needs 5 intermediates — Elm Lumber ×15, Iron Joint Plate ×10, Iron Nails ×10 and 2 others — which resolve to 4 distinct raw materials totalling 120 units, plus 72 crystals.

That bill outweighs 13,498 of the 13,602 recipes tracked here and 1,518 of the 1,552 Carpenter ones, and 337 recipes nest deeper.

Only 12 of those crystals go into the final step; the other 60 are burned by the intermediates, so the real crystal cost is 30 Fire Shard, 28 Wind Shard and 14 Ice Shard.

The chain crosses four disciplines — Carpenter to Lv 22, Blacksmith to Lv 16, Armorer to Lv 15 and Goldsmith to Lv 14 — so no single class can finish it unaided.

All 4 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, Iron Ingot has the widest use: 113 recipes call for it, spanning seven of the eight crafting classes.