NaturesAura/src/main/resources/data/naturesaura/recipes/offering/sky_ingot_from_gold.json

{
    "type": "naturesaura:offering",
    "input": {
        "item": "naturesaura:tainted_gold"
    },
    "start_item": {
        "item": "naturesaura:calling_spirit"
    },
    "output": {
        "item": "naturesaura:sky_ingot",
        "count": 2
    }
}