cup with coffee beans

If your morning coffee tastes more like sour fruit than a rich and smooth cup of joe, you may be wondering why it's so acidic. In this blog post, we'll explore the causes of acidic coffee and provide solutions to help you enjoy a more balanced and flavorful cup. From the type of beans to brewing methods, get ready to discover how to fix this common coffee issue and start your day on the right foot!

Acidity in Coffee: An Overview

Acidity vs Bitterness

Understanding the acidity of coffee is crucial as it affects the overall taste that we perceive while drinking it. Acidity is often confused with bitterness, but it is essential to differentiate between the two. Acidity refers to the tartness or sharpness of the coffee, while bitterness is associated with the coffee's strong and sometimes harsh taste.

Coffee contains various organic acids that contribute to its acidity. Some of the prominent acids found in coffee beans are citric acid, malic acid, phosphoric acid, and acetic acid. Each type of coffee bean, such as Arabica and Robusta, has its distinct acidic profile. Arabica beans tend to have more complex and bright acidity compared to Robusta beans, which often carry a stronger flavor and higher caffeine content.

Our taste buds react differently to each of these acids, producing varying flavors and sensations. For instance, citric acid has a citrusy taste, while malic acid might remind us of a green apple flavor. These acidic flavors contribute to coffee's overall taste and complexity, making it enjoyable to many coffee enthusiasts.

The acidity of coffee can be influenced by several factors during the brewing process, such as water temperature, grind size, and extraction time. A lower water temperature and coarser grind size generally result in less acidic coffee. Moreover, different brewing methods also impact acidity levels; for example, cold brews tend to produce coffee with lower acidity levels compared to hot brewing methods.

It is important to note that an optimal balance of acidity is highly desired in coffee as it creates a well-rounded and flavorful experience. However, some individuals may find the acidic nature of coffee to be bothersome, especially if they have health conditions like acid reflux or irritable bowel syndrome (IBS). In such cases, they can consider experimenting with different brewing techniques or using alkalizing additives to reduce the acidity of their coffee.

In summary, acidity in coffee is a crucial aspect of its taste, and distinguishing it from bitterness is essential. The presence of organic acids in the beans and the brewing process plays a significant role in determining coffee's acidity levels. For those who prefer a less acidic cup of coffee, exploring different brewing methods and additives can help achieve desired flavor preferences.

Factors Affecting Acidity in Coffee

Coffee Beans

The acidity levels in coffee are significantly impacted by the type of coffee beans used. Different beans contain varying amounts of naturally occurring acids, such as chlorogenic, citric, and acetic, which influence the overall taste of the coffee. High-quality beans can produce a pleasant acidic flavor, while lower quality or stale beans might result in a sour, unpleasant taste.

Roasting Process

The roasting process also plays a crucial role in determining the acidity of the coffee. Lighter roasts generally retain more of their natural acids, contributing to a tangier and brighter flavor profile. On the other hand, darker roasts undergo a longer roasting process, which reduces the acidity and results in a smoother, milder taste.

Grind Size

The grind size of coffee beans can significantly impact the extraction process and, thus, the acidity of the brewed coffee. A finer grind exposes more surface area of the bean, enabling a more rapid extraction of acids and oils. In contrast, a coarser grind offers less surface area, resulting in a slower extraction and potentially a less acidic cup of coffee.

Extraction Process

The extraction process is crucial in determining the acidity of coffee. Higher extraction temperatures accelerate the release of acids, giving the coffee a more acidic taste. Conversely, lower extraction temperatures slow down the release of acids, leading to a mellower, less acidic flavor. Moreover, the water-to-coffee ratio can affect the extraction; too much water or too coarse a grind can lead to under-extraction, where the acidity in the coffee becomes unbalanced and overly pronounced.

Water Quality

Lastly, the quality and temperature of water used in brewing coffee can impact its acidity. High-quality water with the proper mineral composition enhances the extraction of flavors, resulting in a more balanced and enjoyable acidity level. In contrast, poor water quality, such as water with an excessive mineral content, can negatively affect the taste of the coffee and increase its perceived acidity

Brewing Methods and Acidity

French Press

The French press method is a popular choice for coffee enthusiasts who prefer their coffee to have a medium to low acidity level. This is because the French press brewing technique allows for a more even extraction of flavors, as the coffee grounds remain in contact with the water for an extended period. The longer brew time also contributes to less acidic and more balanced flavors. Since the coffee is brewed without a paper filter, the final result retains more oils and compounds, giving the coffee a richer and full-bodied taste.

Cold Brew

Cold brew coffee is another brewing method that yields a less acidic cup. In contrast to hot brewed coffees, cold brew has significantly lower levels of acidity. The slow steeping process extracts fewer organic compounds, leading to sweeter flavors without any harshness or astringency associated with high levels of acids in hot brewed coffees. Due to its lower acidity and smoother taste, cold brew coffee has gained popularity among those who may be sensitive to the acidic nature of regular hot brewed coffee.


Espresso is a concentrated form of coffee made by pushing hot water through ground coffee under very high pressure. Though espresso may have a reputation for being highly acidic, its acidity levels are primarily determined by factors such as bean type, roast level, and brewing temperature. In this regard, espresso can range from low to high acidity. Over-extraction of the espresso, which occurs when water passes through the coffee grounds too slowly or for too long, can result in higher acidity levels and a more bitter taste.

Pour Over

Pour over coffee is a manual brewing method that relies on slow, precise pouring of hot water over coffee grounds. The control offered by pour over allows for greater control over factors such as extraction time, water temperature, and grind size, which in turn can influence the acidity level of the final result. Typically, pour over coffee has higher acidity when compared to French press or cold brew methods. However, this acidity can be controlled by adjusting water temperature, grind size, or by adding a pinch of salt to the grounds before brewing to neutralize some of the coffee's acids. To reduce acidity in pour over coffee, one can also experiment with brewing temperatures; using cooler water to slow down the extraction process, resulting in a smoother and less acidic taste.

In summary, each brewing method impacts the acidity of the resulting coffee differently, with factors such as brew time, extraction technique, bean type, and water temperature playing key roles in determining acidity levels. By understanding and adjusting these factors, coffee drinkers can tailor their brewing method of choice to produce a satisfying cup that meets their personal taste preferences and acidity tolerance.

How to Reduce Acidity in Coffee

Adjusting Water Temperature and Brew Time

Water temperature and brew time are key factors in determining the acidity of coffee. Higher water temperatures and longer brew times can cause more acidic components to be extracted from the coffee beans. To achieve a less acidic cup of coffee, try using a lower water temperature, ideally around 195°F (91°C), and a shorter brewing time. This will help in extracting the desirable flavors and aromas without extracting excessive acidic compounds.

Choosing Lower-Acid Coffee Beans

Arabica and Robusta are the two main species of coffee beans. Generally, Arabica beans have a milder and more balanced acidity compared to Robusta beans, which are known for their strong, bitter taste. Opting for Arabica beans can provide a more pleasant and less acidic coffee experience. In addition, some specific coffee beans are specially processed to reduce acidity, such as low- and no-acid varieties that are available on the market. Look for these options to further decrease the acidity in your coffee.

Using Baking Soda

A simple yet effective method to reduce acidity in your coffee is adding baking soda (sodium bicarbonate) to your cup. Baking soda is an alkaline substance that can neutralize the acidity of the coffee, resulting in a more balanced flavor. Start with a small amount, such as a pinch, and adjust to taste as needed. Keep in mind that baking soda can affect the flavor of the coffee, so it is essential to use it sparingly in order not to overpower the taste.

Optimizing Extraction Process

Achieving a balanced extraction is crucial for reducing acidity in coffee. The extraction process involves drawing the desirable sugars, oils, and acidic compounds from the coffee grounds. An under-extracted coffee will taste sour, as the acidic components are extracted faster than the desirable sweetness, while an over-extracted coffee will taste bitter due to excessive extraction of oils and acidic compounds.

To optimize the extraction process, grind your coffee to an appropriate coarseness for your chosen brewing method, ensuring even extraction. For example, a coarser grind works best for a French press, while a finer grind is suitable for espresso machines.

Experiment with different brewing methods, such as a pour-over or cold-brew, to achieve a desired balance of acidity and flavor. Cold brewing, in particular, is known to result in less acidic coffee, as the beans are steeped in cold water for an extended period, typically 12 to 24 hours. This method extracts fewer acidic compounds while still retaining the rich flavors and aromas of the coffee.

By following these tips and adjusting your brewing process accordingly, you can successfully reduce the acidity in your coffee and enjoy a smoother, more enjoyable cup.

Maintaining Coffee Quality for Better Taste

Proper Storage

For coffee lovers looking to reduce the acidity in their brew, it is crucial to store coffee beans in optimal conditions. Coffee beans should be kept in an airtight container, away from direct sunlight, heat, and humidity. This helps to maintain their freshness and prevents the degradation of flavor compounds that can contribute to an acidic taste.

Using Quality Water

Water quality plays a significant role in the taste of your coffee. Hard water, containing high levels of minerals, can lead to a more acidic extraction. Soft water, on the other hand, can improve the taste and reduce the acidity of your brew. To ensure you are using quality water for your coffee, consider using filtered or bottled water instead of tap water.

Regular Cleaning of Coffee Maker

A clean coffee maker is essential for maintaining the quality of your brew. Over time, coffee machines can accumulate residues and mineral deposits that can affect the taste and acidity of your coffee. Therefore, regular cleaning and descaling of your coffee maker is necessary. Follow the manufacturer's recommendations for cleaning frequency and methods to keep your machine in top condition.

By implementing proper storage practices, using quality water, and regularly cleaning your coffee maker, you can ensure a better tasting and less acidic coffee experience.

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Tony Barlow

Tony Barlow

Majesty Coffee Technical Sales Expert - Meet the Team

Tony Barlow, with over a decade of experience in the coffee industry, is the go-to technical sales expert at Majesty Coffee. He's passionate about helping businesses find the right espresso equipment for their needs.

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