Any item in ingredient slot

[zorex]

Hi all.
I need help with a mod, I want to create a recipe that uses 1 any item as an ingredient. Is there a way to do this? The recipe will only be available in a specific machine/furnace.

[robot256]

Typically you will have to use a furnace prototype so that it can automatically select the correct recipe. And then use a loop in the data-final-fixes stage to make a separate hidden recipe for every item in the game. It's been done before and not a big deal.