Internal Furnace Usage

[Blaze]

Is there some way we can make the process of consuming items go faster? "E"ating items one at a time is slow.

[Weyrling]

You can always use ‘=’ to change the stack in question to the E hotkey, then hold it down. This is how I take a stack of 80 vitamins in only a few seconds without getting carpal tunnel.
Note that with some things this can go horribly wrong, causing vomiting or death.

[TaintedHolyWater]

That or "w"ield you vitamins (don’t do this with other drugs) and "A"pply it. Let go when you’ve had enough/ran out.