The default biome blends may not suit your modpack. Luckily, any blend can be removed using a data pack. Additionally, a mod like KubeJS can be used to simplify data pack loading.

Using pack.mcmeta Filters

You can disable any blends using the filter block in your pack.mcmeta file.

Removing Specific Blends

To remove individual blends (e.g. the_end and the_void), add the following to your pack.mcmeta:

  "filter": {
    "block": [
      {
        "path": ".*blend_type/the_void"
      },
      {
        "path": ".*blend_type/the_end"
      }
    ]
  }

This will block the specified biome blends from loading.

Removing All Existing Biome Blends

To block all blends under the minecraft namespace you can use additional pattern matching:

  "filter": {
    "block": [
      {
        "namespace": "minecraft",
        "path": ".*blend_type/.*"
      }
    ]
  }

This removes all vanilla biome blends and their recipes.

Using KubeJS

With KubeJS, you can zip a data pack that only contains the pack.mcmeta file and place it inside kubejs/data folder. It will load automatically with the rest of your KubeJS scripts. Because of that, your changes will be applied to all existing and new worlds.

Full example pack.mcmeta

{
  "pack": {
    "pack_format": 15,
    "description": "Data pack that removes all default blends and their recipes"
  },
  "filter": {
    "block": [
      {
        "namespace": "minecraft",
        "path": ".*blend_type/.*"
      }
    ]
  }
}