Adding and Hiding Items [Minecraft 1.16.5 to 1.18.2] - mezz/JustEnoughItems GitHub Wiki

[!NOTE] Version note: This page covers adding and hiding item ingredients for Minecraft 1.16.5, 1.18.2, 1.19.2, and 1.20.1. Use the API Javadocs for exact class and method names on the version you target.

Other ingredient pages:

Minecraft 1.12.2: Adding Items, Hiding Ingredients, Item Subtypes, Non-Item Ingredients

Minecraft 1.21, 1.21.1, 1.21.11, 26.1.2, and 26.2: Ingredients and Visibility

Overview

JEI automatically adds items automatically from multiple sources, including:

Creative Tabs
The Item Registry
The Block Registry

Adding Items

Make sure your item is registered properly. If you can't /give it to yourself, odds are it isn't registering!
If a subtype of your item is missing, make sure it's in a creative tab. If it's still missing afterwards, JEI might think it's a duplicate of another item, you can register it during registerItemSubtypes.

Removing/Hiding Items

Assuming you already have a JEI plugin created, you can hide items by using IRecipeRegistration.getIngredientManager().removeIngredientsAtRuntime() during registerRecipes().