You can dry a sponge and cook food in the same furnace, so why can't you use several different fuels? This mod doesn't increase the amount of fuels you can have in a furnace at a time, instead, it converts them all into a single liquid, where 1 millibucket corresponds to 1 tick of fuel time. Solid fuels aren't the only thing that can be converted either, energy and even liquid fuels (fuel time per mb is determined by floor(bucket fuel time / 1000))! Many of the recipes are the same as the original mod, but with item tags used for cross-mod compatibility. Images will be added in the future. {For manual fuel solidification, click the images corresponding to the item you wish to make within the gui.}
Feature Summary:
Cross-Mod Compatibility Features: