Siphon Coffee Brewer

Taken all the way down to base materials, one Siphon Coffee Brewer is 2 crafting steps deep and needs 2 intermediates — Dwarven Mythril Ingot ×3 and Bluespirit Tile ×1 — which resolve to 5 distinct raw materials totalling 22 units, plus 42 crystals.

That bill outweighs 8,402 of the 13,602 recipes tracked here and 917 of the 1,932 Blacksmith ones, and 4,464 recipes nest deeper.

Only 14 of those crystals go into the final step; the other 28 are burned by the intermediates, so the real crystal cost is 35 Fire Crystal and 7 Earth Crystal.

Every step is Blacksmith work, from a Lv 74 intermediate up to the Lv 80 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, Dwarven Mythril Ingot has the widest use: 168 recipes call for it, spanning seven of the eight crafting classes.