src/main/resources/builtin/loot/entities/iron_golem.json

{
  "items": [
    {
      "default": {
        "count": {
          "max": 2
        },
        "item": "iron_ingot"
      }
    },
    {
      "default": {
        "count": {
          "max": 2
        },
        "item": "red_flower"
      }
    }
  ],
  "experience": {
    "count": 0
  }
}