{
    "format_version": "1.20.10",
    "minecraft:recipe_furnace": {
        "description": {
            "identifier": "minecraft:deepslate_furnace"
        },
        "input": "minecraft:cobbled_deepslate",
        "output": "minecraft:deepslate",
        "unlock": [
          {
            "data": 0,
            "item": "minecraft:cobbled_deepslate"
          }
        ],
        "tags": [
            "furnace"
        ]
    }
}