{
  "type": "create:compacting",
  "ingredients": [
    {
      "item": "createmetallurgy:slag"
    },
    {
      "item": "minecraft:gravel"
    },
    {
      "item": "create_ironworks:charcoal_dust"
    }
  ],
  "results": [
    {
      "item": "minecraft:tuff"
    }
  ]
}