Cotton Canvas

Taken all the way down to base materials, one Cotton Canvas is 2 crafting steps deep and needs 3 intermediates — Cotton Yarn ×2, Beeswax ×1 and Hempen Yarn ×1 — which resolve to 3 distinct raw materials totalling 7 units, plus 4 crystals.

That bill outweighs 4,963 of the 13,602 recipes tracked here and 557 of the 1,968 Weaver ones, and 4,464 recipes nest deeper.

Only 1 of those crystals go into the final step; the other 3 are burned by the intermediates, so the real crystal cost is 3 Lightning Shard and 1 Water Shard.

The chain crosses two disciplines — Weaver to Lv 18 and Alchemist to Lv 10 — so no single class can finish it unaided.

All 3 raw materials are gathered, and not one of their spots is timed, so nothing in the tree waits on the Eorzean clock.

Cotton Canvas is itself consumed by 5 further recipes, spanning two of the eight crafting classes.