House Borel Interior Wall ★★

Taken all the way down to base materials, one House Borel Interior Wall is 4 crafting steps deep and needs 10 intermediates — Hallowed Ramie Cloth ×6, Mortar ×4, Twinthread ×4 and 7 others — which resolve to 12 distinct raw materials totalling 94 units, plus 105 crystals.

That bill outweighs 13,458 of the 13,602 recipes tracked here and 1,958 of the 1,968 Weaver ones, and 1 recipe nests deeper.

Only 4 of those crystals go into the final step; the other 101 are burned by the intermediates, so the real crystal cost is 59 Lightning Crystal, 20 Water Crystal, 8 Water Shard and 3 other kinds.

The chain crosses two disciplines — Weaver to Lv 70 and Alchemist to Lv 56 — so no single class can finish it unaided.

11 of the 12 raw materials come out of the ground, and 2 of them are time-gated: Abalathian Mistletoe (6:00, 18:00) and Rhea (0:00, 12:00). The widest gap between consecutive opening times is 6 Eorzean hours, about 18 real-world minutes.

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