superb-warfare/src/generated/resources/data/superbwarfare/recipe/iron_barrel.json

{
  "type": "minecraft:crafting_shaped",
  "category": "misc",
  "key": {
    "A": {
      "item": "minecraft:iron_ingot"
    }
  },
  "pattern": [
    "AAA"
  ],
  "result": {
    "count": 1,
    "id": "superbwarfare:iron_barrel"
  }
}