{
  "type": "exdeorum:hammer",
  "ingredient": [
    {
      "item": "minecraft:cobblestone"
    },
    {
      "item": "minecraft:diorite"
    },
    {
      "item": "minecraft:granite"
    },
    {
      "item": "minecraft:andesite"
    }
  ],
  "result": "minecraft:gravel",
  "result_amount": 1.0
}