Is there any reason you can't reuse coffee grounds?

Discussion in 'Community Discussion' started by Zombie Acorn, Sep 28, 2009.

  1. macrumors 65816

    Zombie Acorn

    Feb 2, 2009
    Toronto, Ontario
    I drink quite a bit of coffee and usually reuse the same grounds twice, it tastes about the same to me but everyone else who drinks coffee tends to think its a sickening idea. :D I also have one of the machines with a filtered cup instead of having to use paper filters so its not like a mushy paper filter is sitting in there.
  2. macrumors G4

    Rodimus Prime

    Oct 9, 2006
    depends on how long you let them sit. It is one thing to quickly rebrew a pot.

    But you wait a day and well stuff has started growing. Let wet coffee grounds sit about 3 days and you will see lot of stuff growing in them. Coffee provides very fertile place for stuff to grow.
  3. macrumors 604


    Um gross? You should need to thoroughly dry it if you want to reuse it. Why do you want to reuse them anyways? Coffee been shortage? :)
  4. macrumors 68020


    Nov 14, 2003
    Washington, DC
    Would it still have much caffeine content for the second brewing? My understanding is that caffeine is highly water soluble and there wouldn't be much left.
  5. macrumors 601


    Jul 1, 2007
    Southern California
    Yeah I don't think it remotely would taste the same to brew twice––besides it being kind of weird. If you enjoy brewing the grounds twice why not three times, six times? How many times have you tried until the flavor profile has degraded too much for your palate?

    +1 for another thread though.
  6. thread starter macrumors 65816

    Zombie Acorn

    Feb 2, 2009
    Toronto, Ontario
    It beats running to walmart at 1 am :D

    Generally I do it only if its one after another pot. The second one usually doesn't taste "as good" but its decent. I don't put anything in my coffee anyways.
  7. macrumors 604


    Do you give the grounds a break? Or is it back to back coffeeing?
  8. thread starter macrumors 65816

    Zombie Acorn

    Feb 2, 2009
    Toronto, Ontario
    Usually back to back coffeeing, sometimes a couple hours between. It depends how much caffeine I need and how late it is.
  9. macrumors 604


    I hope you're not drinking the whole pot all by yourself. :eek:
  10. macrumors 6502a


    Sep 7, 2009
    Reminds me of a colleague at work -- I often ask him why he bothers with a mere pot; wouldn't a 55 gallon drum filled with freshly brewed coffee be much more convenient for his (coffee) drinking habits? :D
  11. thread starter macrumors 65816

    Zombie Acorn

    Feb 2, 2009
    Toronto, Ontario
    You thought I would share? :confused: :D Usually its the only way I can get my studies done @ 5 am.
  12. macrumors newbie

    Jun 19, 2009
    Sounds like you're not picky about your coffee so why not just switch to using the instant stuff?
  13. macrumors 6502a


    Mar 6, 2006
    There's no reason not to as long as you reuse it within a few hours.

    If it tastes fine to you, then go for it. To me, it's disgusting. It tastes burnt...
  14. macrumors 603


    Aug 2, 2002
    Cork, Ireland.
  15. macrumors 601

    Don't panic

    Jan 30, 2004
    having a drink at Milliways
    this reminds me of once in a youth hostel in amsterdam where we caught the guy at the place's bar "recycling" the used coffee grounds by mixing them with
    fresh ones for another brew (and it was not complimentary).
    pretty lame.

    i think if you reuse it immediately is fine, it's just going to be weaker and with a quite different flavor 'profile', because different essences get extracted at different rates.
    i have an espresso machine that uses pods and if you use the same twice it is night and day. not even remotely comparable.

    try it with tea: take a tea bag and put it for one minute in one cup and then for one minute in another.
    often (especially if it is a herbal mix) it is not just a matter of strength, they taste completely different (and might have a different color, too)
  16. macrumors 603

    Oct 22, 2007
    An Island in the Salish Sea
    Blech! I'm not really fussy about my coffee, but I'd be able to taste the difference. I know this because I use a drip system that makes 2 cups at a time. Long story short, I think the last 1/2 cup that comes out is terribly weak. I have to wait for the full 2 cups to drip before indulging.

    If you want coffee that puts hair on your chest......
    In the 1940's there was an RCMP vessel (the St Roch) which patrolled the Canadian Arctic. To make coffee they scooped a bunch of grounds into an enamelled coffee pot, added water, and put on the stove to boil. No filters, or drip baskets ... grounds into the water - boil - simmer. When the pot started to feel light, you added more grounds and water and put back onto the stove. When the pot was full of grounds, then you emptied the pot and started a fresh pot.

    I got this story directly from one of the Mounties who was there....
  17. macrumors 65816


    Aug 28, 2008
    I thought this was going to be a discussion of how to reuse coffee grounds as an alternative energy source. Given the number many people drink coffee, we should have an abundance of it. :D
  18. macrumors 6502a


    Nov 29, 2008
  19. macrumors 6502

    Nov 16, 2008
    Doha, Qatar
    If you are hardcore about coffee (like me) and drink shots of espresso then you definitely cannot use the same grounds twice.

    The second shot that you draw will not have the same consistency and will also lack any crema (the dark red froth at the top).
  20. macrumors 604


    Dec 12, 2007
    off world.
    Other than yuck, no. Go for it. smacks of reheating cold coffee in a microwave. Double yuck. But there's no law - legal, physical, moral or otherwise - that says you can't.
  21. macrumors newbie

    Nov 24, 2010
    laugh out loud

    These posts totally made my night. :D Hahahaha, so funny. I'm going to try reusing my coffee grounds from the pot I just made...we'll see how it turns out. I don't know whether there will be any caffeine left?

    Thanks for the entertainment.
  22. macrumors 65816

    Mr Kram

    Oct 1, 2008
    maybe you can save the grounds from 4 fresh pots of coffee to make one decent leftover pot.
  23. macrumors G3


    May 5, 2008
    The Misty Mountains
    I am the only one who drinks coffee in my household and I don't drink it by the pot so I brew strong coffee, then immediately brew a second pot about half full with the same grounds. Drink a cup or two and keep the rest stored in a half gallon plastic jug in the fridge. When I want more the next day and later in the week, I pour a cup and pop it in the microwave. I assume this is not what a real coffee connoisseur does, but I don't waste it and it tastes good to me. :)
  24. macrumors G4


    Mar 24, 2006
    I'm guessing it would taste like ass...and not the good kind.
  25. macrumors 6502a

    Jul 27, 2010
    :eek: how exactly do you know what that tastes, never mind I'd probably feel nausea

Share This Page