Pixie Cotton

Taken all the way down to base materials, one Pixie Cotton is 2 crafting steps deep and needs 1 intermediate — Pixie Floss ×3 — which resolves to 1 distinct raw material totalling 4 units, plus 7 crystals.

That bill outweighs 3,935 of the 13,602 recipes tracked here and 436 of the 1,968 Weaver ones, and 4,464 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 3 are burned by the intermediates, so the real crystal cost is 7 Lightning Crystal.

Every step is Weaver work, from a Lv 74 intermediate up to the Lv 74 finish, so one class covers the whole chain.

Its single raw material is gathered, and no spot for it is timed, so nothing in the tree waits on the Eorzean clock.

Pixie Cotton is itself consumed by 46 further recipes, spanning six of the eight crafting classes.