Alright. so what i want is to add a brewing recipe for resistance potions using my custom item. so basically you have an awkward potion and then you put my custom item in and it brews into resistance potions and then you can extend them, make them tier 2, and make them splash potions after that. but what i want to know is how do i do that? because im assuming that resistance potions, normal, extended, tier 2, and splash are already in the code. and i already know the effect for resistance is in the code. but what i want to know is how to brew the resistance potions. I would really appreciate the help, sorry i dont really have any code for you guys to work off of, but i couldnt find the brewing recipes in mojangs code so thats why i came here. Thanks in advance for whoever helps me. sincerely killerjdog51

Have a look here:

 

http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/modification-development/2128914-1-7-2-forge-custom-potions-unsolved-closed

 

and the linked thread from there:

 

http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1290485-brewing-api-for-minecraft-1-7-10

 

This should help you understand the situation