So, you’ve started to notice that your daily coffee habit is burning a hole in your wallet. As you look around for ways to cut down on costs, you come across a few voices online recommending that you reuse your coffee grounds another time after the initial brewing; is this common? Safe? Completely disgusting? We set out to answer this question, and what we found was very interesting.
Flavor
Let’s get one thing out of the way first; if you’re serious about the flavor profiles and ratios in your coffee, you probably don’t want to reuse your grounds. That extra cup will almost certainly not taste the same as the first, and if you’re looking for that extra-fresh pick-me-up multiple times a day, you’re going to need to pony up for additional grounds.
That said, if you’re someone who puts a generous amount of creamer and sugar in your coffee, you may not notice this difference as much. In these situations, it may be okay to reuse your grounds, but only if you do it quickly.
Reusing the same coffee grounds twice in a day is one thing, but waiting an entire day or more is probably not a good idea. Unless you’re dumping and thoroughly drying the grounds in between uses, you’ll likely find that saturated, soggy coffee grounds are an excellent breeding ground for bacteria, fungus, and even molds. This can happen exceptionally quickly, and if you leave them sitting for 3 or more days, you will absolutely want to throw them out.
In addition, it’s also important to never use grounds more than two times, max. Not only will the coffee just taste completely horrible, but you’ll be wasting water at that point as well, so there’s really no point to trying to stretch things this far.
Alternative Use
If you’re still looking to find a use for your spent grounds other than taking up space in your garbage, you could try drying them out and using them as a skin exfoliator, or as an abrasive for cleaning particularly difficult dishes.
You could also make them into compost, as worms love coffee almost as much as you do! Just be sure that you’re keeping them nice and clean, especially if you’re wanting to use them on your body.
At the end of the day, regardless of what anyone will tell you, it isn’t going to hurt anything to reuse your coffee grounds, especially if each brew is shortly after the other. With that said, you won’t want to make it a habit, and you absolutely shouldn’t try to get more than two brews out of the same set of grounds. If you can keep this in mind, you’ll be just fine.
Have any other questions about reusing coffee grounds, or any ideas you have for giving spent grounds a job in your home? Share them with other readers below.
Anthony is a professional barista in the city of Chicago. He has written for many online publications on various topics related to coffee.
What are some ides for using the coffee on skin and the benefits for it?
You might be able to make a coat?
That’s outrageous. How could you possibly sew it together. 🤡
You can use it as a scrub. Mix with body wash or just use alone as an all over body scrub. It is probably too rough for the face. I love coffee ground scrubs!
How to revive coffee grounds after the lid has been off of the container for 3 days
Disposing old or unwanted medicine. In my state you can’t (and shouldn’t) dump meds down the sink or toilet. But in the trash they can be taken by dumpster divers or animals. So they recommend mixing pills etc with old coffee grounds to discourage this.
How about just deliver it to pharmacies?
I just tried repouring a cup of coffee over the grounds I have just used, to increase the flavor in my coffee. I think it worked. I poured, within seconds after my pot was filled, one cup of coffee back over the ground, letting it dripped in through an empty cup. Then I poured that in with the fresh coffee in my portable mug. It increased the flavor. Thank you.
I love using old coffee grounds as a body scrub and dumping them on plants helps give them a boost.
I always re-use old coffee grounds. But only in the garden or flower beds. Could also be used for worm beds. But definitely not for a second cup of coffee !!!!! 🙁
My daughter uses too much coffee for her coffee, so I get an extra cup out of her used grounds, although it is not my first cup of the day.