{
  "format_version": "1.20.10",
  "minecraft:recipe_furnace": {
    "description": {
    "identifier": "minecraft:furnace_red_sandstone"
    },
    "unlock":[
      {
        "item" : "minecraft:red_sandstone",
        "data" : 0
      }
    ],
  "tags": [ "furnace" ],
  "input": {
    "item" : "minecraft:red_sandstone",
    "data" : 0
  },
  "output": "minecraft:smooth_red_sandstone"
  }
}