{
  "format_version": "1.21.50",
  "minecraft:recipe_furnace": {
    "description": {
      "identifier": "minecraft:furnace_birch_leaves"
    },
    "unlock": [
      {
        "item": "minecraft:birch_leaves"
      }
    ],
    "tags": [ "furnace" ],
    "input": "minecraft:birch_leaves",
    "output": "minecraft:leaf_litter"
  }
}