[!NOTE] Version note: This page covers hiding ingredients for Minecraft 1.12.2.

Other ingredient pages:

• Minecraft 1.16.5, 1.18.2, 1.19.2, and 1.20.1: Adding/Hiding Items, Item Subtypes
• Minecraft 1.21, 1.21.1, 1.21.11, 26.1.2, and 26.2: Ingredients and Visibility

Hiding Ingredients

To hide ingredients from JEI, you have to first create a plugin.

In the register method of your plugin, it is passed the IModRegistry.
From there, you can get the ingredient blacklist:

IIngredientBlacklist blacklist = modRegistry.getJeiHelpers().getIngredientBlacklist()

Any ingredient added with IIngredientBlacklist#addIngredientToBlacklist will not be shown to the player in the ingredient list.

Blacklisted ingredients will still show up in recipes.