Ash is a resource found in the Riverside village.
It is available as soon as Riverside is unlocked, and does not need unlocking itself.
It takes 10 minutes to gather 8 planks of Ash. No specialist tools are required to gather Ash.
Ash is required to make several Tools, such as the Ash Box, the Ash Fishing Rod, and the Nickel Axe. It is also vital for the construction of Fishing Hut 1, the Ash Farm House, and the Riverside Abode.