Explanation: Elin is a very strange game with mechanics that defy common sense. It has a hammer tool which deconstructs things into their primary component, however bizarre they might be. Thanks to Elin's complex crafting system, these components can be turned into other items.

In this image, this shows scrap that was mined from the walls of dungeons can be turned into nails, which if hammered, turns into bones. Bones are very versatile and can be turned into a lot of things. It can turn into bone dust, make it into bread, and offer this to the god Jure of Healing for favour. Bone can be turned to bait to fish with, the fish cut into bonito flakes which can be processed in a barrel turning it into wine, allowing either favour with Lulwy of Wind or be turned into huge profit.

Below is an edited version from reddit, adding other useful recipes.