{
  "format_version": "1.12",
  "minecraft:recipe_furnace": {
    "description": {
    "identifier": "minecraft:furnace_chainmail_helmet"
    },

    
    "tags": ["furnace", "blast_furnace"],
    "input": "minecraft:chainmail_helmet",
    "output": "minecraft:iron_nugget"
  }
  
}