minecraft-assets/data/minecraft/recipe/gold_ingot_from_smelting_raw_gold.json

{
  "type": "minecraft:smelting",
  "category": "misc",
  "cookingtime": 200,
  "experience": 1.0,
  "group": "gold_ingot",
  "ingredient": "minecraft:raw_gold",
  "result": {
    "id": "minecraft:gold_ingot"
  }
}