[
  {
    "inputFluid": "water",
    "outputFluid": "witchwater",
    "transformingBlocks": [
      {
        "name": "minecraft:mycelium",
        "meta": 0
      }
    ],
    "blocksToSpawn": [
      {
        "name": "minecraft:brown_mushroom",
        "meta": 0
      },
      {
        "name": "minecraft:red_mushroom",
        "meta": 0
      }
    ],
    "duration": 12000
  }
]