First time making mod, need help

[dotBL4CK]

I'm making a mod that makes espresso from a espresso machine that you put 20 coffee beans in. I've written everything I need in BigCraftablesInformation.yaml, CraftingRecipes.yaml, and ObjectInformation.yaml. All I need to do now is know where to put the information that lets me put 20 coffee beans into the machine to get a espresso. The 2 things are in game I just can't get the one to make the other. I just need to know where the info for say "mayonnaise machine" hold the info to know it takes a egg to make mayonnaise.

Thank you,