Iron Skillet

Taken all the way down to base materials, one Iron Skillet is 3 crafting steps deep and needs 3 intermediates — Ash Lumber ×1, Iron Plate ×1 and Iron Ingot ×2 — which resolve to 2 distinct raw materials totalling 9 units, plus 6 crystals.

That bill outweighs 5,492 of the 13,602 recipes tracked here and 519 of the 1,441 Armorer ones, and 337 recipes nest deeper.

Only 2 of those crystals go into the final step; the other 4 are burned by the intermediates, so the real crystal cost is 2 Fire Shard, 2 Ice Shard, 1 Earth Shard and 1 other kind.

The chain crosses three disciplines — Armorer to Lv 15, Blacksmith to Lv 16 and Carpenter to Lv 10 — so no single class can finish it unaided.

One intermediate outranks the result: Iron Ingot is a Lv 16 Blacksmith recipe feeding a Lv 15 craft, so that step, not the last one, is the real gate.

Both raw materials are gathered, and no spot for either is timed, so nothing in the tree waits on the Eorzean clock.