Eye of Water

Nothing in this list is craftable in turn, so one Eye of Water is a single step: 1 unit of material drawn from a single base item, plus 2 crystals.

That is the lightest raw-material bill on the site, tied with 3,129 other recipes, and 9,374 recipes nest deeper.

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

Eye of Water is itself consumed by 4 further recipes, spanning three of the eight crafting classes.