Coffee is a beloved morning ritual for millions, but for some, its natural acidity can cause discomfort like heartburn or stomach upset. If you love coffee but want to make it less acidic without sacrificing flavor, you’re in the right place! This guide will walk you through simple, effective ways to reduce coffee’s acidity and enjoy a smoother, gentler cup every time.
Why Is Coffee Acidic?
Coffee contains over 30 organic acids that contribute to its complex flavor and bright notes. While these acids add vibrancy, they can also cause digestive issues for sensitive drinkers. The acidity level of coffee is measured on the pH scale, where lower numbers mean more acidic. Regular coffee typically has a pH between 4.85 and 5.10, while low-acid coffee ranges from 5.50 to 6.00, making it significantly gentler on your stomach.
12 Proven Ways to Make Coffee Less Acidic
1. Choose Low-Acid Coffee Beans
Start at the source by selecting beans known for lower acidity. Beans from Brazil, Honduras, Peru, Mexico, and Sumatra tend to have naturally smoother, less acidic profiles. Also, beans processed using the natural or dry method usually have less perceived acidity than washed beans because the fermentation mellows the acids.
2. Opt for Darker Roasts
Light roasts preserve more acids, while darker roasts break down chlorogenic acids during roasting. French, Italian, or Vienna roasts can have 50-95% less acid than lighter roasts. Dark roasts also develop richer, more complex flavors that balance acidity.
3. Try Cold Brew Coffee
Cold brewing extracts coffee at low temperatures over a long time, resulting in about 70% less acid compared to hot brewing methods. The slow extraction produces a smooth, naturally sweeter cup that’s much gentler on your stomach.
4. Use Coarser Coffee Grounds
Finer grounds increase surface area and extract more acids quickly, often leading to sourness. Using coarser grounds, especially with French press or cold brew methods, slows extraction and reduces acidity.
5. Brew at Lower Temperatures
Hotter water extracts acids more aggressively. Brewing at 190-195°F (88-90°C) instead of near boiling can reduce acid extraction while still delivering great flavor.
6. Extend Brew Time Carefully
Acids are among the first compounds released during brewing. Under-extracted coffee (too short brew time) can taste sour due to concentrated acids. Slightly longer brew times help balance extraction and mellow acidity. For example, aim for 3-3½ minutes for pour-over and 5 minutes for French press.
7. Use Paper Filters
Paper filters trap oily compounds that carry acids, unlike metal filters. Switching to paper filters in drip or pour-over brewing can reduce acidity and bitterness for a cleaner cup.
8. Add Alkaline Ingredients
Adding a pinch (about ¼ teaspoon) of baking soda to your coffee grounds or brewed coffee neutralizes acidity without altering flavor. Similarly, adding crushed eggshells to the coffee grounds can reduce acid due to their alkaline calcium content—just be sure to strain them out before drinking.
9. Add Milk or Plant-Based Milks
Milk and plant-based milks like almond or soy are slightly alkaline and help balance coffee’s acidity. Adding milk smooths the flavor and reduces harsh acidic notes, making your cup gentler on the stomach.
10. Use Hard or Mineral-Rich Water
Water with higher mineral content (hard water) naturally buffers acidity. Brewing with hard water or adding mineral packets designed for coffee can raise the pH of your brew and reduce acid extraction.
11. Don’t Overheat or Store Coffee Hot for Long
Reheating coffee or keeping it hot for extended periods increases acid release, making the coffee taste more acidic and bitter. Drink freshly brewed coffee or store it in a thermos to maintain flavor without extra acidity.
12. Experiment with Brewing Methods
Some methods naturally produce less acidic coffee. French press, Aeropress, and cold brew are excellent choices for a gentler cup. Pour-over with paper filters also helps control acidity by adjusting grind size, water temperature, and brew time.
Coffee acidity is a natural part of its flavor profile, but with these simple tips, you can enjoy your favorite beverage without the harshness. Whether you switch to darker roasts, try cold brew, or add a pinch of baking soda, there’s a way to make coffee less acidic that fits your taste and lifestyle.
Enjoy a smoother cup and happier mornings!