Oasis House Roof (Stone)

Taken all the way down to base materials, one Oasis House Roof (Stone) is 3 crafting steps deep and needs 5 intermediates — Mortar ×20, Roof Tile ×20, Cut Stone ×10 and 2 others — which resolve to 7 distinct raw materials totalling 200 units, plus 138 crystals.

That bill outweighs 13,560 of the 13,602 recipes tracked here and 2,201 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 28 of those crystals go into the final step; the other 110 are burned by the intermediates, so the real crystal cost is 66 Wind Shard, 60 Water Shard and 12 Fire Shard.

The chain crosses two disciplines — Goldsmith to Lv 35 and Alchemist to Lv 20 — so no single class can finish it unaided.

All 7 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, Silver Ingot has the widest use: 157 recipes call for it, spanning eight of the eight crafting classes.