Can You Reuse Coffee Grounds? If Yes, How To Make Use Of Them?

If you are a coffee addict, you may notice that the grounds for each day are quite a lot. What do you do with these things? Do you toss them in the rubbish disposals? Do you feel it's a waste?
How to make use of them? Can you reuse coffee grounds to brew another cup? If you are curious about the answer, this article from Top Reviews will help you out with a detailed answer. Let's read on to learn more!

Can You Reuse Coffee Grounds? 

The short answer is yes. You can use yesterday's grounds to make another brew. It is completely safe to drink.

However, the matter lies in the taste and the flavor this cup brings. We are sure that you may not want to enjoy a cup of coffee with leftover grounds. 

The first reason is you can never get a strong level like the first brew.

All you get is weak java because it has less caffeine content. Thus, the best solution to reuse residual grounds is to brew cold coffee. 

As you know, baristas apply the steeping method to make the coffee bolder. In this way, leftover grounds will work at full capacity, and its flavor is also stronger than when using other brewing techniques.

In general, you can use residual grounds twice to make cold brew coffee, which is suitable for those who are really into beverages with pale taste. 


What Does Coffee From Used Grounds Taste Like? 

As made from residual grounds, these cups of coffee may taste dull, acidic, and a bit astringent. That's because all the quintessence was in the first brewing.

In particular, the longer the grounds are in contact with water and extraction, the lighter and more bitter the coffee tastes. 

Moreover, the second cup doesn't contain polyphenols, and the proteins bind in enzymes and create a dry mouth outcome. That's why people who love robust beverages don't like them. 

Cold brew coffee

How Many Times May Coffee Grounds Be Reused?

There is no rule about how many times you can reuse coffee grounds. It depends on your personal preference and proposed application. 

Undoubtedly, java from residual grounds is not tasty and flavorful, even bitter and extremely bland. 

What's more, you shouldn't use grounds left at room temperature too long. 

The wet condition is a perfect and ideal environment for bacteria, mold, and fungus growth. So, reuse them on the same day.

For this reason, you should only make it no more than two times to achieve a better cup. As shared above, the best way to make use of these things is to make them into cups of cold brew. 

You can reuse them as many times as you like

Are Used Coffee Grounds High In Caffeine? 

Is the caffeine content in the leftover grounds really strong enough to keep you awake? 

As you may not know, the average coffee bean can contain about 10 mg/g to 12 mg/g caffeine content. It is a different story with grounds. They own only about 3.59 mg/g to 8.09 mg/g.

From the statistics, you can see that the leftover grounds still contain caffeine, despite not as much as the original beans. However, remember that caffeine is substantially soluble in water.

Furthermore, brewing methods play an important part in the remaining caffeine content of the grounds. In general, caffeine is not high enough to have an effect. 

Leftover grounds

How To Make Use Of Used Coffee Grounds? 

Besides trying to make another brew, you can make use of residual grounds in several ways. Below are the most practical and useful ways you can apply to avoid wasting them. Let's take a peek!

Deodorize your fridge or closet

Are you seeking ways to eliminate irritating odors from stinky shoes, musty refrigerators, or malodorous pets' bedding? Luckily, grounds can be the best solution in these situations. 

If your closets or fridge are smelly, all you need to do is to put some leftover grounds into an uncovered jar and leave it there in a few days. The grounds will take in all the irritating odors and balance out any remaining smells. 

How to remove the terrible smell from your shoes? 

Put a little in a small mesh bag and leave for about 2 to 3 days. Then check your shoes. Surely the disgusting smell is gone!

You can also deal with the disgusting odor coming from your pet's bed with just grounds. Sprinkle grounds on top of their bed and let it sit for 24 hours. 

Don't worry, as this natural deodorizer is safe for pets. After one day, wash the bedding, and you won't smell the awful smell anymore.

Use as a body scrub.

Coffee grounds are gritty in texture and acidic in content, acting as excellent skin exfoliators. It explains why many cosmetic brands add them to their product ingredients.

You can also make your scrubs with simple and easy-to-find ingredients. You need to prepare three teaspoons of grounds, one teaspoon of natural oils, and one teaspoon of brown sugar or sea salt.

After that, mix all items and store them in a jar. The natural exfoliator is extremely good for removing dirt particles on hands, legs, or the whole body. After a period of use, your skin will be surprisingly smooth and beautiful.

Homemade exfoliators

Use as fertilizer 

If you are a gardener, it is great to know that you can use leftover grounds for your garden. They come with a wide range of gardening applications.

For instance, you can use them as organic fertilizers for your plants, vegetables, or flowers. They are incredibly beneficial for plants because they are rich in nitrogen, calcium, potassium, and magnesium. 

Besides, they can function as insect repellents thanks to their acidity content. You can try sprinkling them onto your plant and vegetable beds to eliminate bugs, ants, and slugs. They also bring a fresher and healthier home garden space.

Use as pet flea treatment.

Are you looking for a reliable topical scabies medicine for your cat? Try using used grounds. While these products are from chemicals and harmful to animals, leftover grounds are 100% safe with natural origin. Another benefit is that they save you quite a bit of money. 

After taking a bath for your pet, rub some residual grounds on the fur. After that, wash your pet as usual. Now you can cuddle them without fear of any fleas.

Make homemade candles

If you are a big fan of scented candles and coffee, why not mix them into homemade coffee candles. Then, you can use them to replace aromatic oils. 

It's quite easy to create your candles. You need to melt candle wax at about 170०F within about 2 or 3 minutes. Wait for the wax to cool down at 150०F, put a wick, and then pour some used grounds until the container is full. When the candle is dry, you can burn it.

When the candle burns out, the grounds will be exposed, and the heat will release the strong aroma of the coffee.

Homemade candle

Wash pots and pans

You can also use leftover grounds as natural detergents because they contain acid content. They are incredibly ideal for washing pots and pans and taking away the grime from the kitchen corners. 

Pour some grounds on a cloth and then scrub the dirt, pots, or pans. The results will surprise you!

Use as a homemade shampoo.

After using hair gels or hairsprays, product residue often builds up on your hair. Now, with leftover grounds, it is not a big problem.

Before you wash your hair, take some used grounds and gently massage your scalp and hair. This process will get rid of build-up and detoxify hair to make it light and shiny again.

In this way, you don't need to worry about chemicals that will damage your hair, but it's also quite economical.

You can learn more some ways to make use of leftover grounds via this video:

Source Youtube Natural Ways

In A Nutshell

This article should have reached the end of the question: can you reuse coffee grounds? You can use them as a cold brew java for the second cup, but the taste may not satisfy you. 

They can be good for other applications such as natural fertilizer, deodorizer, detergents, and many others.

Hopefully, you will find our recommendations interesting and helpful!

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