I'm making a mod that adds a synthetic blaze rod and I need to make it so it works instead of a blaze rod in item recipes that use a blaze rod. Like in IC2 you can make copper wire from Mekanism copper or TC Copper.

I believe you're looking for the OreDictionary, but I don't think Minecraft uses the OreDictionary for blaze rods. You're going to have to iterate through the recipes list and clone each recipe in it that contains the blaze rod and replace the blaze rod with your blaze rod. Not sure if you'll need to make your mod load last or just add the recipes post-initialization.

This is what the Ore Dictionary is for, but Blaze Rods aren't registered with it by default. This means vanilla recipes and most mod recipes will just use

Items.blaze_rod

as an ingredient directly instead of using an ore name.

 

You should add vanilla Blaze Rods and your synthetic Blaze Rods to the Ore Dictionary with the same ore name (e.g.

rodBlaze

, which is already used by various other mods and modpacks) and then use ore recipes (

ShapedOreRecipe

/

ShapelessOreRecipe

) in your mod. Use this ore name as an ingredient instead of using an

Item

instance.

 

I have a 1.7.10 class here that can replace any existing recipes that use the specified

ItemStack

as an input or output with ore recipes that use the specified ore name as an input and a specified replacement

ItemStack

as the output.