Salt in coffee: clever hack or dangerous trend?

A pinch of salt in your coffee may sound harmless — it’s said to reduce bitterness and even make the drink “smoother.” But before you reach for the salt shaker with every cup, let’s take a closer look at what’s really going on.

There are some anecdotal reports that salt can make coffee taste “less aggressive,” but there is no real scientific evidence to support that adding salt offers health benefits. Moreover, it can unnecessarily increase your total salt intake, which may have negative effects on your health.

☕ What Salt *Doesn't* Fix

Many people add salt to mask bitterness. While salt can indeed dampen the perception of bitter tastes, that doesn’t speak to the quality of your coffee itself. Bitterness usually occurs because:

• The coffee is over-roasted,
• The grind is too fine,
• The water is too hot,
• Or the extraction time is too long.

In other words: salt addresses a symptom but doesn’t tackle the cause.

Health: What Do Experts Say?

Regular black coffee naturally contains no salt. This is also reflected in the nutritional tables of the Voedingscentrum: 0 grams of salt per cup.

Salt (sodium) is an essential nutrient, but most people in Western countries already get plenty of it through their daily diet. Too much sodium is linked to high blood pressure and an increased risk of heart disease, kidney problems, and other health issues. Data from the World Health Organization shows that the average global salt consumption is well above the recommended limit, contributing to millions of avoidable deaths.

Even if a pinch of salt doesn’t cause direct harm, it adds to an elevated sodium intake that you don’t need — when there are far better ways to make a flavorful, balanced cup of coffee.

Better Alternatives Than Salt

Coffee is more than 98% water — and the quality of that water largely determines how your coffee tastes. Hard water with many minerals can make it taste more bitter. Therefore, choose:

• Filtered water
• Water with a balanced mineral profile

This way, you can extract more fruity and aromatic flavors from your beans without any tricks.

Light to medium-roasted, freshly roasted beans often show more sweetness and nuance than dark roasts, which can taste more bitter. Start with the source: better beans, better flavor — no salt required.

Bitterness can also arise from too fine a grind, water that’s too hot, or too long of an extraction time. Try:

• Grinding coarser,
• Using water around 85-90°C (185–194°F),
• Shortening extraction time.

This can immediately make your cup lighter and more pleasant.

If you want some variation, consider:

• Cinnamon (warm, aromatic)
• Cardamom (floral and spicy)
• Vanilla (natural, no sugar)

These add character without adding sodium.