ZenScript
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import mods.appliedenergistics2.Grinder;
ZenScript
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Grinder.addRecipe(IItemStack output, IItemStack input, int turns, @Optional IItemStack secondary1Output, @Optional float secondary1Chance, @Optional IItemStack secondary2Output, @Optional float secondary2Chance);

Grinder.addRecipe(<minecraft:sapling>, <minecraft:leaves>, 4, <minecraft:sapling:5>, 0.3);
ZenScript
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Grinder.removeRecipe(IItemStack input);

Grinder.removeRecipe(<minecraft:quartz_ore>);