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Reasons Why Does My Coffee Taste Bitter

The 11 Reasons why does my coffee taste bitter? How to fix

Can you count on how many times you were longing for something, and it went bad and the disappointment that comes with it?

This is exactly the same thing that happens with coffee making. Imagine yourself coming home from work, long days, or nights just busy, and the only thing you want is a calming cup of coffee.

How would you feel if you made coffee that tastes “bad” at that moment? You would ask yourself questions like why does my coffee taste bitter or maybe look for an alternative which is deciding on the best nonbitter coffee brands to buy to avoid such disappointments. Coffee should be enjoyed as the relaxant it is!

What this article is about and why you need to read it?

The main aim of writing this article is to help the world out there know more about coffee, what to check if the taste of the coffee changes suddenly, the best brands of coffee to buy, the reasons why your coffee tastes bitter and give you solutions to all these coffee bitter taste issues.

The 11 Reasons why does my coffee taste bitter? How to fix

It will help you be a better coffee maker, and you need to read to avoid some of the mistakes that you could be making while preparing your coffee, which makes it taste bitter or burnt or plastic or watery or sometimes metallic.We got the problem identified and the solutions ready for you.

The 5 Reasons Why My Coffee Always Tastes Bitter?

The 11 Reasons why does my coffee taste bitter? How to fix

Coffee brewing is more of an art as well as a science and therefore requires a combination of both skills to make great tasting coffee brews. Ideally, people think that coffee is all about the water, equipment, and coffee beans only while there’s much more to it than just these three. However, most common mistakes are made out of these.

Below are the reasons we have identified as to why your coffee tastes bitter;

  1. The coffee beans: grinding your own coffee beans seems like a good idea but can also be a major contributor to why your coffee has a bad taste.
  2. How garden-fresh are your coffee beans? Coffee has an expiry date too, and therefore, your beans could be out of shelf life if you experience bitter taste on your coffee. Coffee starts to lose its flavor once you open the roaster. This could be the cause for coffee to be bitter due to constant degassing (leaking of carbon dioxide found in roasting products leading to loss of flavor) during storage.
  3. The roaster could be bad. Roasting your own coffee beans may perhaps remain as the other possible reason why your coffee tastes bitter majorly because roasting is a picky process. It requires being done as well as it would be done through professional equipment. If you buy your coffee from a store and it tastes bitter, the roaster could have made a mistake too. The quality of the coffee matters too. If the coffee quality is low, then that might make you think that it is the cause of the bad taste. You need to know that the low quality is an indication of poor flavor, and therefore you should choose the type of coffee you purchase keenly. The cheaper the coffee type, the lower the flavor. For example, Robusta coffee has a low quality compared to arabica coffee.
  4. Another reason why your coffee is tasting bitter could be your grind size. This can make a big difference in your flavor. Too big grounds show that your coffee is under-extracted and make your coffee taste sour.
  5. Moving on from coffee beans being the problem, the second problem might be water. Your tap water might taste great when you are drinking, but when it comes to making coffee, it could be the problem. There could be particles too huge that deteriorate the flavor of your coffee.
  6. The temperature you are using to brew your coffee could be wrong. Have you ever known that to make coffee, you need your water hot but not boiling?
  7. The equipment used to brew your coffee could the cause of bitter taste to your coffee.        
  8. First of all, dirtiness in the equipment you use could lead to a severe change in the flavor of the coffee and therefore needs to be cleaned regularly. Your beans and water could be good and also your water temperature, but then have you checked your equipment! Most of us will just rinse through and assume it is clean. Well, it is not!
  9. Secondly, the equipment might have worn out and in need of replacement. Holding all the other potential reasons constant, the old age of your coffee machine could be a solid reason for your bitter taste in coffee. How long have you used your coffee maker, serving you with a whelming heart cup every time you needed one. Getting a new one should not be an issue at all.
  10. Lastly, you might be using the equipment in the wrong way or drinking coffee from the wrong is advisable you use glass or ceramic cups or if traveling uses stainless steel mugs are the best.
  11. If all the above are not the reason, then your timing when brewing coffee could be wrong. Coffee is making a delicate process that needs perfection. Also, you could be an addict of coffee and therefore brewing too much coffee and keeping for later. Lastly, it could be that you just don’t like that type of coffee because it doesn’t just make you feel satisfied.

Coffee bitterness scale.

Flavor by altitude.

Very high altitude(5000ft)-fruit, spice, floral, berry, wine.

High altitude(4000ft)-citrus, vanilla, chocolate, nut

Medium altitude(3000ft)-low acidity, sweet

Low altitude (2000ft and below)-island, earthy


What to do when your coffee tastes bitter suddenly?

Since we are already aware of what makes our coffee taste bitter, the solution is here with us too. How do we fix all the reasons that we have seen are the cause of bitterness in your coffee?

  1. Throw away beans that have reached their expiry date or those which have lost their flavor due to long shelf life. Keep your beans properly stored to avoid such occurrences.
  2. Change your roaster. Coffee is more about personal taste.
  3. Know the best quality of coffee beans before purchasing one. Read the labels carefully and also be aware of fake labels.
  4. Be well informed on using grinders to grind coffee beans and learn the perfect size to grind depending on the type of coffee is better if you have your own grinder.
  5. If water is your problem, then filter tap water before using it to brew coffee or alternatively use bottled water to brew your coffee.
  6. What if the bitter is a result of temperature? You can buy a thermometer or just do the temp. Check manually by keeping your boiled water to rest for a few seconds before adding your coffee beans.
  7. Clean your equipment thoroughly and not just rinsing. If they are too old, then get a new coffee maker.
  8. Be sure of how to use the equipment for brewing coffee to avoid any bad tastes and use the proper machine.
  9. Finally, avoid brewing too much coffee at a go. It is advisable to brew less coffee more often, especially at home. Always have a fresh cup of coffee to drink.

Best non-bitter coffee brands (TOP PICKS)

Bestseller No. 1
Café Sello Rojo Premium Colombian Coffee | Smooth & Flavorful | No Bitter Aftertaste | 100% Colombian Medium Roast Ground Coffee | Café de Colombia | 16 Ounce (Pack of 1)
  • 100% COLOMBIAN ARABICA COFFEE: Pure Arabica Colombian coffee. No blends....
  • BEHIND THE BEANS: Sello Rojo's coffee is sourced directly from family farms...
  • COFFEE'S PRIME CLIMATE: The Andes Green Mountains provide the perfect...
  • THE BEST BREW: For the finest brewing experience, scoop one leveled...
Bestseller No. 2
Tyler’s No Acid Organic Coffee Beans - 100% Arabica Full Flavor - Neutral pH - No Bitter Aftertaste - Gentle on Digestion, Reduce Acid Reflux - Protect Teeth Enamel - For No Acid Diets - 12 oz
  • The Cleaner Coffee - Ground low acid organic coffee is our whole foods...
  • A Better Belly - Acid reflux can cause indigestion, bloating and other...
  • Taste Meets Happiness - Our secret roasting process strips harmful tannins...
  • A Brewed Awakening - Organic coffee ground low acid strikes a healthy...
Bestseller No. 3
Cameron's Coffee Roasted Ground Coffee Bag, Breakfast Blend, 32 Ounce, (Pack of 1)
  • RESPONSIBLY SOURCED: Cameron's is committed to 100% Responsibly Sourced...
  • ALWAYS SMOOTH, NEVER BITTER: (1) 32-Ounce Bag of Ground Coffee, 100%...
  • BRIGHT & FRUITY: Our Breakfast Blend Coffee features smooth, complex...
  • POSITIVELY FOCUSED: From the farmers we choose to work with, to the actions...
Bestseller No. 4
Lucy Jo's Coffee Roastery, Organic Mellow Belly Low Acid Blend, Medium Dark, Ground, 11 oz (11 OZ)
  • Certified Organic low acid coffee blend easy on the tummy
  • 100% Organic Arabica Beans from Indonesia and Brazil
  • Smooth, sweet and earthy, with a hint of spice
  • Small batch roasted by hand for optimum flavor in our family-run facility
Bestseller No. 5
Lavazza Crema E Aroma Whole Bean Coffee Blend, 2.2-Pound Bag , Balanced medium roast with an intense, earthy flavor and long lasting crema, Non-GMO
  • Lavazza Crema E Aroma Whole Bean Coffee Blend, 2.2-Pound Bag , Balanced...
  • Crema e Aroma Roast Whole Bean Coffee Non-GMO
  • One 2.2 lb. bag of Lavazza Crema e Aroma Italian ground coffee
  • Balanced medium roast with an intense, earthy flavor and long-lasting crema
Bestseller No. 6
Caribou Coffee, Light Roast Ground Coffee - Daybreak Morning Blend 20 Ounce Bag
  • Contains one (1) 20 Ounce Bag of Caribou Coffee Daybreak Morning Blend...
  • Daybreak Blend: Light Roast with fruity and caramel sweetness with a nutty...
  • Quality Ingredients: Rainforest Alliance certified, 100% Arabica coffee,...
  • Brewing Methods: Our ground coffee is formulated to make drip or a pour...
Bestseller No. 7
VitaCup Perfect Low Acid Coffee Ground, USDA Organic & Fair Trade, Mycotoxin Free, Dark Roast Guatemala Single Origin, Clean & Pure for Drip Coffee Brewers and French Press, 11 ounces
  • ☕️ ORGANIC LOW ACID COFFEE: Delicious, clean coffee as pure as it gets....
  • ⚡️ PURE, CLEAN, & MYCOTOXIN FREE: Perfect Coffee low acid coffee is 3rd...
  • 🌱 HEALTHY ANTIOXIDANTS: Perfect Ground Coffee contains chlorogenic acid...
  • 🌏 SINGLE-ORIGIN, HIGH ALTITUDE GROWN: 100% dark roast Arabica coffee...

What makes coffee bitter chemistry?

The 11 Reasons why does my coffee taste bitter? How to fix

15% of coffee bitterness is caused by the caffeine ingredient present in the coffee. The rest of the bitterness percentage is a result of two strong and antioxidant compounds which are found in roasted coffee beans, i.e., chlorogenic acid lactones and so phenylindole.

How to make coffee less bitter without sugar?

If you do not have time to make another coffee, add a pinch of salt. Also, if the ratio of coffee to water is too high or you leave the coffee to steep for too long, a pinch of salt takes away the bitterness.

Why does my coffee taste burnt?

If your coffee tastes burnt, the chances are that the beans are over-roasted and also when you overcook the coffee.

Brewing coffee with too hot water for a long period could also lead to its tasting burnt, and therefore you need to watch your temperatures. Keep your coffee warm as keeping it hot tampers with the flavor.

Why does my coffee taste more metallic?

This coffee problem is mostly associated with your equipment being too old, and in other cases, the problem is usually the water quality. Tap water has been bringing this problem quite often as there could be touches of chlorine or any chemicals in the cooking water.


To conclude, now that you are aware of what has been the problem with the tasting dissolute of coffee plus the means to solve this, it is time to make some great coffee in your kitchen. Have the best coffee time always.

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