Country Interior Wall

Taken all the way down to base materials, one Country Interior Wall is 3 crafting steps deep and needs 3 intermediates — Clinker Bricks ×5, Mortar ×4 and Distilled Water ×4 — which resolve to 7 distinct raw materials totalling 39 units, plus 45 crystals.

That bill outweighs 11,756 of the 13,602 recipes tracked here and 1,459 of the 1,591 Alchemist ones, and 337 recipes nest deeper.

Only 12 of those crystals go into the final step; the other 33 are burned by the intermediates, so the real crystal cost is 39 Water Shard and 6 Lightning Shard.

Every step is Alchemist work, from a Lv 1 intermediate up to the Lv 50 finish, so one class covers the whole chain.

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, Mortar has the widest use: 140 recipes call for it, spanning six of the eight crafting classes.