This mod speeds up the standard vanilla furnace so it smelts each item in one second (20 ticks). It does this by changing the behavior of the existing furnace block rather than adding new blocks or items, and crafting a furnace still gives you the normal furnace. To use it, simply craft, place, and fuel a regular furnace as usual; hopper automation and other furnace behavior remain unchanged while only the cook time is accelerated.
How to install
1. Download and install the new CreativeMode Launcher
2. Click to play on the top of the screen.
3. That's it — launches instantly. No complicated setup required.