Chirurgeon's Curtain

Taken all the way down to base materials, one Chirurgeon's Curtain is 3 crafting steps deep and needs 5 intermediates — Undyed Linen ×10, Mythril Ingot ×5, Brass Ingot ×3 and 2 others — which resolve to 5 distinct raw materials totalling 50 units, plus 76 crystals.

That bill outweighs 12,777 of the 13,602 recipes tracked here and 1,873 of the 1,968 Weaver ones, and 337 recipes nest deeper.

Only 7 of those crystals go into the final step; the other 69 are burned by the intermediates, so the real crystal cost is 44 Lightning Shard, 20 Fire Shard and 12 Wind Shard.

The chain crosses four disciplines — Weaver to Lv 35, Blacksmith to Lv 38, Carpenter to Lv 32 and Goldsmith to Lv 14 — so no single class can finish it unaided.

One intermediate outranks the result: Mythril Ingot is a Lv 38 Blacksmith recipe feeding a Lv 35 craft, so that step, not the last one, is the real gate.

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