example full script

import crafttweaker.item.IItemStack;

recipes.addShapeless("test_shapeless", <pyrotech:rock:4> * 2, [<minecraft:dirt>]);

recipes.addShaped("test_shaped", <pyrotech:mulch> * 4, [[<ore:dyeBlack>, <pyrotech:rock:7>, <ore:dyeBlack>],[<pyrotech:rock:7>, <ore:dyeWhite>, <pyrotech:rock:7>], [<ore:dyeBlack>, <pyrotech:rock:7>, <ore:dyeBlack>]]);

recipes.replaceAllOccurences(<minecraft:gold_ingot>, <minecraft:apple>);