Does coffee loose its effectiveness?!
Answers: I know that old coffee doesnt taste good, but if you were to heat up day old coffee, does it still have the same amount of caffeine and effectiveness in waking you up?
It will never lose its potency, as there are only certain processes that a bean will have to go through to lose its caffeine.
It will still wake you up just fine.....maybe even more as your tongue will get quite a shock from the bad taste!
All i know is I HATE day old coffee..it gets bitter and tends to have dredges...ewww...Nothing like fresh for me! Even the coffee houses keep time on how old the pot is..Source: Tim Hortons in Canada puts a time on the pot. If you are a true coffee drinker then you don't want warmed over sludge.
i dont know for sure, but I think it would still retain its effectiveness. It just wouldn't taste very good since the coffee has been oxidized (sitting in oxygen)
I don't know that it loses its effectiveness but warmed up coffee so gross. I will not drink it after about four hours old even if the pot is still hot.
I'm pretty sure it doesn't lose any effectiveness - or not enough to be significant, anyways.