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