Manor Oven ★★

Taken all the way down to base materials, one Manor Oven is 3 crafting steps deep and needs 6 intermediates — Clinker Bricks ×4, Darksteel Ingot ×2, Mortar ×2 and 3 others — which resolve to 11 distinct raw materials totalling 59 units, plus 45 crystals.

That bill outweighs 13,079 of the 13,602 recipes tracked here and 1,790 of the 1,932 Blacksmith ones, and 337 recipes nest deeper.

Only 2 of those crystals go into the final step; the other 43 are burned by the intermediates, so the real crystal cost is 24 Water Shard, 12 Fire Crystal, 5 Fire Shard and 2 other kinds.

The chain crosses two disciplines — Blacksmith to Lv 50 and Alchemist to Lv 39 — so no single class can finish it unaided.

9 of the 11 raw materials come out of the ground, and one of them is time-gated: Darksteel Ore (1:00). That window comes round once per Eorzean day, every 70 real-world minutes.

Of the intermediates, Cobalt Ingot has the widest use: 145 recipes call for it, spanning seven of the eight crafting classes.