Chirashi-zushi

Taken all the way down to base materials, a batch of 3 Chirashi-zushi is 2 crafting steps deep and needs 1 intermediate — Rice Vinegar ×1 — which resolves to 7 distinct raw materials totalling 10 units, plus 17 crystals.

That bill outweighs 5,754 of the 13,602 recipes tracked here and 690 of the 1,058 Culinarian ones, and 4,464 recipes nest deeper.

Only 10 of those crystals go into the final step; the other 7 are burned by the intermediates, so the real crystal cost is 7 Fire Shard, 5 Fire Crystal and 5 Water Crystal.

Every step is Culinarian work, from a Lv 65 intermediate up to the Lv 69 finish, so one class covers the whole chain.

4 of the 7 raw materials come out of the ground, and one of them is time-gated: Lotus Root (8:00, 20:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Rice Vinegar has the widest use: 7 recipes call for it, all of them Culinarian recipes.