The Blast Furnace is a type of IRecipeManager and implements all the methods that are available to IRecipeManager's, such as removeRecipe() and removeAll(). Along with the Blast Furnace is the Blast Furnace Fuel, which is also a type of IRecipeManager and implements all the methods that are available to IRecipeManager's, such as removeRecipe() and removeAll().

The following script will add a recipe that will output Charcoal, and a piece of String (as Slag), after 1000 ticks when any Item from the Wool Tag is given to the Blast Furnace.

ZenScript
 Copy
// <recipetype:immersiveengineering:blast_furnace>.addRecipe(string recipePath, IIngredient ingredient, int time, IItemStack output, @Optional(<item:minecraft:air>) IItemStack slag)

<recipetype:immersiveengineering:blast_furnace>.addRecipe("wool_to_charcoal", <tag:items:minecraft:wool>, 1000, <item:minecraft:charcoal>, <item:minecraft:string>);

The following script will add a Fuel to the Blast Furnace that will take a Golden Sword with the name "Sword of the Sungod" and will burn for 100000 ticks.

ZenScript
 Copy
// <recipetype:immersiveengineering:blast_furnace_fuel>.addFuel(string name, IIngredient fuel, int burnTime)

<recipetype:immersiveengineering:blast_furnace_fuel>.addFuel("the_sungods_sword_can_burn", <item:minecraft:golden_sword>.withTag({display: {Name: "{\"text\":\"Sword of the Sungod\"}" as string}}), 100000);

The following script will remove all recipes from the Blast Furnace that outputs Charcoal.

ZenScript
 Copy
// <recipetype:immersiveengineering:blast_furnace>.removeRecipe(IItemStack output)

<recipetype:immersiveengineering:blast_furnace>.removeRecipe(<item:minecraft:charcoal>);

The following script will remove Charcoal as a Fuel for the Blast Furnace.

ZenScript
 Copy
// <recipetype:immersiveengineering:blast_furnace_fuel>.removeRecipe(IItemStack fuel)

<recipetype:immersiveengineering:blast_furnace_fuel>.removeFuel(<item:minecraft:charcoal>);