{
  "format_version": "1.20.10",
  "minecraft:recipe_furnace": {
    "description": {
    "identifier": "minecraft:furnace_iron"
    },

    "unlock": [
      {
        "item": "minecraft:raw_iron"
      }
    ],
    "tags": ["furnace", "blast_furnace"],
    "input": "minecraft:raw_iron",
    "output": "minecraft:iron_ingot"
  }
  
}