This page relates to Atum 2, which has built-in support!
Quern
Adding a Recipe
<recipetype:atum:quern>.addRecipe(input, output, rotations);
input
IItemStackoutput
IItemStackrotations
Any number above 0
Adds a recipe with the specified input & output, that takes the specified rotations to complete querning
Removing a Recipe
Remove Recipes by Output
<recipetype:atum:quern>.removeRecipeByOutput(output);
output
IItemStack
Removes all recipes where the output result is the provided IItemStack.
Remove Recipes by Output & Input
<recipetype:atum:quern>.removeRecipeByOutputInput(output, input);
output
IItemStackinput
IItemStack
Removes the specific recipe, with the specified output & input
Other removal methods
See Recipe Managers for other ways to remove Quern recipes