
Custom Fuel
This mod lets you configure which items can be used as furnace fuel.
The settings are stored in custom_fuel.json in the config folder.
Config file format
A valid config file consists of two optional entries on the top level -
include and exclude.
includeis a map where the keys are IDs for the items and/or item tags to be added to the list of fuel items, and their values are how long they last (in ticks, as an integer).- If a value is zero or negative, the item can be placed into the fuel slot, but will not burn. This behaviour relies on vanilla code, and may change at any point in the future.
excludeis an array of IDs for the item tags to no longer be usable as fuel items.
The mod applies the inclusions, then the exclusions, on top of the vanilla fuel list (i.e. vanilla fuel items are kept intact unless you manually exclude them).
A current limitation of this mod is that exclusions must be tags. To exclude individual items, you have to make a datapack with your own custom tag that contains all the individual items you want to exclude, and exclude that tag.
Example configuration
{
"include": {
"#c:netherracks": 3200,
"#minecraft:beds": 300,
"#minecraft:flowers": 50,
"minecraft:redstone_block": 16000
},
"exclude": [
"#minecraft:banners"
]
}
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.2, 1.21.3, 1.21.4
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as custom-fuel-0.0.0+mc1.21.2.jar — drop this file into the mods folder
- Download size: 10 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.