pumpkin-java-multiversion/assets/datapacks/26_3/data/minecraft/recipe/packed_mud.json

{
  "type": "minecraft:crafting_shapeless",
  "category": "building",
  "ingredients": [
    "minecraft:mud",
    "minecraft:wheat"
  ],
  "result": {
    "id": "minecraft:packed_mud"
  }
}