meatballcraft/config/agricraft/json/defaults/resource/mutations/plombean_mutation.json

{
  "path": "resource/mutations/plombean_mutation.json",
  "enabled": true,
  "chance": 0.25,
  "child": "resource:plombean_plant",
  "parent1": "resource:ferranium_plant",
  "parent2": "vanilla:brown_mushroom_plant"
}