{
  "input" : [
    { "item" : "darkwoodmaterial", "count" : 25 },
    { "item" : "copperbar", "count" : 10 }
  ],
  "output" : {
    "item" : "hoe",
    "count" : 1
  },
  "groups" : [ "anvil", "tools", "all" ]
}