I have added JEI integration to my mod, and I'm working on crafttweaker integration. I got it working for one process, the crushing tub, but recipes that are removed still show up in JEI. The method in Crafttweaker's api to remove jei recipes doesn't work, whether I pass it a recipe, or a recipe wrapper. I tried using the instance of jei's recipe registry to remove the recipe directly using more up to date methods, but that didn't work either.

 

Here is the package with my classes for jei and crafttweaker compat

I think you're doing the opposite of what you want here.
Also, you're doing redundant null-checks. The list will never be null, because you're initializing it as an empty arraylist.
A for-each-loop will also only run if the collection contains anything (here, if !list.isEmpty())

In undo, I do want to add the recipe, because that is meant to undo the removal of the recipe. The null checks I can get rid of, but they should'nt be causing any problems

Ah, missed that.
Are you sure that the Recipes.crushingTubRecipes is altered when you call it.remove in apply?

If the recipe is properly removed from your own recipes, then you may need to forcefully remove the wrapper for this recipe in JEI manually.

yeah, I can't craft the items when I remove the recipe, the recipe still shows in jei, though

 

Upon further testing, it seems impossible for me to remove recipes at all.

 

@Override
    public void onRuntimeAvailable(IJeiRuntime iJeiRuntime) {
        recipeRegistry = iJeiRuntime.getRecipeRegistry();
        for (CrushingTubRecipe r : Recipes.crushingTubRecipes) {
            recipeRegistry.removeRecipe(new CrushingTubRecipeWrapper(r), "rustic.crushing_tub");
            recipeRegistry.removeRecipe(r);
            recipeRegistry.removeRecipe(new CrushingTubRecipeWrapper(r));
        }
    }

 

does nothing, even though though I know the loop is succesfully calling the methods on all the crushing tub recipes

recipeRegistry.removeRecipe(new CrushingTubRecipeWrapper(r));

Well, you are removing a new wrapper, so that will never work. You should save the instances of the original recipe and wrapper classes and use those, don't bother removing them and just disable them in the recipe/wrapper classes.