How do I add crafting and furnace recipes?

[Assossa]

Hey,
I'm checking out Cuberite for a custom server I want to start. I'm a Java plugin developer for Spigot, so this is quite a change. I'm looking for a way to add and remove furnace and crafting recipes. I couldn't find it in the docs and the information on the forums is very fragmented and confusing.

Thanks for your help!