The Science Behind Low-Acid Coffee: How Slow Roasting Fixes Stomach Issues.

For most of us, that first morning cup of coffee is easily the best part of the day, unless it comes with a downside like heartburn, acid reflux, or an upset stomach.

If you love coffee, but hate the stomach irritation, the issue usually isn’t from the coffee bean itself. It comes down to how the bean was roasted. 

Why Most Coffees Cause Heartburn

Green coffee beans naturally contain organic acids. Under the right conditions, heat breaks down these acids during the roasting process. However, other roasters, and massive commercial brands, tend to prioritize speed over everything else. This means that when they’re roasting their coffee, they aren’t doing it with Low Acid in mind. This is why when you brew most coffees, you’re left with a highly acidic cup that easily triggers heartburn and irritates sensitive stomachs.     

The Art of the Slow Roast 

At Gold Star Coffee, we roast by hand & eye, artisanal masters using a forgotten and traditional process. Our roasting equipment are from the turn of the century (1900’s) that are no longer used in the modern industry yet produce a superior roast with an unmatched depth in flavour. Due to this careful consideration in how we roast our coffee, we take our time to roast Low-Acid Coffee at a lower flame for a longer time.

As we take our time to slow-roast our beans at a lower flame, the gentle heat naturally melts away harsh acids, and breaks down the specific components that trigger stomach pain. 

An amazing side effect of this slow process is that it makes the coffee naturally sweeter as the sugars inside the bean have had ample time to caramelize. This gives the coffee a rich, smooth flavour completely free of that sharp, bitter aftertaste. It’s how we deliver the World's Best Tasting Coffee® without the stomach ache. 

In fact, we had our Low Acid - Mold Free Coffee's independent third party tested, coming back with a remarkably smooth pH result of 5.70.

Finding a Stomach-Friendly Brew

A sensitive stomach shouldn’t mean giving up on your morning routine. We source and slow roast an extensive variety of organic and Low Acid beans from top growing regions worldwide.

If you’re ready for a rich, flavourful cup from top growing regions worldwide, and one that won’t upset your stomach, take a look through our specialty Black Label - Low Acid collection to find your perfect match.