Minecraft is abstract.
You can roast meat in a stone oven, but you can also smelt iron, bake bricks, and dry sponges in the same oven.

This MOD abstracts even fuel. Using specialized equipment, all combustible materials are converted into a single solid fuel.

Getting Started
First, prepare coal, charcoal, and blaze rod and arrange them as shown below to craft an abstraction catalyst.
Crafting Abstraction Catalyst

Next, craft the catalyst, bucket, furnace, and cobblestone by arranging them as shown below.
Crafting Fuel Abstractor

It will be abstracted when you install the device, open the GUI, and install fuel in the slot on the left.
For liquid fuel, the container is returned to the bottom slot.
Fuel Abstractor GUI

Abstracted combustibles are stored in internal volumes in units of combustion time.
These can be solid fuels, and you can switch to fuels with different combustion times using the radio button at the bottom right.
Fuel Abstraction

This MOD can be freely used in MOD Packs.

Future update:

Improved performance
Cooperation with JEI
Add recipe using JSON