minecraft-assets/data/minecraft/recipes/cyan_dye_from_pitcher_plant.json

{
  "type": "minecraft:crafting_shapeless",
  "category": "misc",
  "group": "cyan_dye",
  "ingredients": [
    {
      "item": "minecraft:pitcher_plant"
    }
  ],
  "result": {
    "count": 2,
    "item": "minecraft:cyan_dye"
  }
}