{
  "Use Permission": false,
  "Speed Multipliers": {
    "furnace": 3.0,
    "furnace.large": 3.0,
    "global": 1.0
  },
  "Fuel Usage Speed Multipliers": {
    "furnace": 3.0,
    "furnace.large": 3.0,
    "global": 1.0
  },
  "Fuel Usage Multipliers": {
    "global": 1,
  },
  "Output Multipliers": {
    "global": {
      "global": 1.0
    }
  },
  "Whitelist": {
    "global": [
      "item.shortname"
    ],
    "furnace.shortname": [
      "item.shortname"
    ]
  },
  "Blacklist": {
    "global": [
      "item.shortname"
    ],
    "furnace.shortname": [
      "item.shortname"
    ]
  },
  "Smelting Frequencies (Smelt items every N smelting ticks)": {
    "global": 1,
  },
  "Debug": false
}​

runescape

I'm no longer using this plugin because of this issue.

NICE THANK YOU

galex1995

NICE THANK YOU

Throw this bad boy into the mix:

https://umod.org/plugins/unburnable-meat

agresos

https://i.imgur.com/liGCDXi.png

solved ..  add ( , ) to the end of the item the last one goes without the ( , )

that solved my problem thanks for sharing.