Edible Antidote

Taken all the way down to base materials, a batch of 3 Edible Antidote is 2 crafting steps deep and needs 1 intermediate — Antidote ×1 — which resolves to 5 distinct raw materials totalling 5 units, plus 6 crystals.

That bill outweighs 4,201 of the 13,602 recipes tracked here and 826 of the 1,591 Alchemist ones, and 4,464 recipes nest deeper.

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

Every step is Alchemist work, from a Lv 5 intermediate up to the Lv 70 finish, so one class covers the whole chain.

All 5 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, Antidote has the widest use: 2 recipes call for it, spanning two of the eight crafting classes.