For making a change to something vanilla you need to know what the core component, or the component that the vanilla components are using, I will explain the fertiliser system to you to try and give you a feel for how it breaks down.
To create a new fertiliser you need to create a child of the fertiliser_compost class, you can’t do it under consumable_p00p because the game won’t allow you to “craft” a p00p child, and you can’t do it under fertiliser_base because that’s the parent of fertiliser_compost.
A crop can accept and use a fertiliser_compost child, it can be added into plots and won’t have an issue, however you now need a new inventory somewhere that can craft this new recipe.
Vanilla inventories can’t be modified, they are core components of the ark dev kit and it will simply ignore all changes to them and not cook them, so you need to make a new inventory, for that you need a non child structure/base blueprint to stick it in, this means you have to create a brand new building/device for anything you add, so best to make something cool that does multiple things.
For your new ingot recipe you need:
- new structure
- new inventory
- new recipe
- new engram
You will need to recreate all other things you want it to be allowed to create (gasoline etc…), you can make the new items a child of the core items, and then anything looking for the core item, will use your child item too… but they can’t stack on each other, so change their icon and name and just say it’s a different thing (i.e. iron alloy 43).