This works for all overworld seeds, on Tilled Soil, Nether Wart, on Soul Sand, and Chorus Flower on End stone.
[1.12] Quark Mod Download
Quark Mod aims to create an experience akin to the “vanilla” experience, by having a very simple motto: anything that would be added to Quark could also be added to the default game without compromising its gameplay style. To that end, every feature added to Quark is simple and small. Hence the name of the mod, Quark, as a Quark is a very small thing. Quark is a Modular mod. Which means that its features are split within various modules. All of the modules can be disabled, and all the features can also be disabled individually if one wants to.
How to install:
- Download and install Minecraft Forge.
- Download the mod.
- Go to %appdata%.
- Go to .minecraft/mods folder.
- If the “mods” folder does not exist you can create one.
- Drag and drop the downloaded jar (zip) file into that.
- Enjoy the mod.
Download links for other versions:
 
NodensTheGreat
You should add coal chunks which are a piece of coal that only smelt one item, and add an extra spot in the furnace for it for more precise, less wasteful smelting.