Instant coffee is more efficient than regular coffee. It's about maximizing liquid volume caffeine content. Add in mass producing instant coffee sludge production (while reusing plastic water bottles) and you end up with multiple bottles of portable instant coffee sludge for a wake me up (along with strong coffee breath). Having it turn a little sweet was gross. I stopped making the water bottles like that after I realized it was fermenting or something throughout the week. You could also load it up with fake sugar so it was a caffeine, bitter taste, sweet taste hit all at once. *Bob misses the coffee sludge

and considers making some more again.* Maybe I will make some more. I remember it's relief to be wide awake and alert like that.
Since then I moved on to caffeine pills, but those don't do much of anything anymore. I have seen you can get pharmaceutical grade caffeine powder off Amazon, but something like a spoonful of that can actually kill you. I'm surprised they sell it.
*Bob continues pondering making some more....*

That's just inefficient. Imagine all the liquid you ingest slooshing around and then having to keep taking in that amount once you build up a tolerance to it.
Dang... That's interesting. I remembered I might actually have some in my kitchen cabinets. It starated to feel like Christmas morning for a second at the thought of running over and seeing if there some instant coffee in there.
I also remember if you keep reusing the same coffee mug with that sludge that the crusted sludge can start molding after a while. You either realize that visually or by the taste. It's bitter bark-tasting sludge. It's not supposed to have a hint of mold in it, although it would still work.

Here's what I came to post.

*Bob heads off to the kitchen.* I know it's still there.... Just waiting... Calling me....