This one is going to be controversial! – We want your opinion – should you or should you not add salt to your coffee? Write your comments at the end of this article.
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Why You Should Be Adding Salt to Your Coffee
Coffee is so versatile. That’s what I love about it. You can drink it black, with a dash of milk, a bit of half and half or with creamer. Add sugar or don’t. Nothing really dulls that basic coffee flavour that’s so powerful and robust.
Though I don’t experiment too much with my cup of coffee at home, I try to keep myself up to date with the latest trends in coffee drinking. I am always open to new ideas. But this one trend stopped me dead in my tracks – Salt? In Coffee?
Yes, you heard right. Why, oh why would you do that to your precious cup of joe you ask? Turns out salt counteracts some of the bitterness in coffee and rounds out its flavour. This is backed up by science. When science talks, I tend to listen.
The Science Behind Bitterness in Coffee
Contrary to popular opinion Caffeine does not make coffee bitter. According to scientists at the Technical University of Munich in Germany, just about 15% of the bitterness in coffee comes from caffeine. The bulk of the bitterness in coffee comes from two classes of compounds – Chlorogenic Acid Lactones and Phenylindanes.
Both these compounds are antioxidants found in roasted coffee beans and not the raw, green beans. Chlorogenic acid lactones are present in lighter roasts and phenylindanes, which are the breakdown products of chlorogenic acid lactones, are present in darker roasts.
This clearly goes to show that the stronger you roast your coffee the harsher and more bitter it gets.
Brewing Mistakes That Could Be Making Your Coffee Bitter
Bad brewing habits could also be making your coffee bitter. Over brewing the coffee, or letting it steep for too long produces bitterness. Using very hot water, or boiling water to extract coffee tends to make your brew bitter.
Using too fine a grind, using too much coffee in proportion to water, using stale or poor quality coffee beans or using dirty brewing equipment all lead to a bitter tasting product. To understand why salt helps tame this bitterness, we need to first understand how salt operates.
How Does Salt Combat Bitterness?
It all begins on the tongue. The surface of the tongue is lined with thousands of taste buds each capable of identifying the 5 basic tastes – sweet, salty, bitter, sourness and umami. Food on the tongue sets off a chemical reaction that is then transmitted to the brain. That’s how you identify taste.
Research shows that the biological mechanism of producing sweet, salty, sour and umami flavours are similar. Salt, while being a taste itself, works to amplify these other flavours.
Bitterness, on the other hand, operates differently. Instead of the normal reaction, the taste buds release a calcium ion that send a ‘bitter’ signal to the brain. Salt, for reasons not yet demystified, overrides this reaction on the tastebuds thereby masking the bitter sensation.
So, Salt Does Help! But How Should You Add It To Your Coffee?
According to Alton Brown, a very popular cookbook author, adding a quarter teaspoon of kosher salt to 6 tablespoons of coffee grounds neutralizes the bitterness and acidity in coffee and enhances its inherent sweetness. You can then choose your preferred method of brewing this salted coffee.
That being said, there are no rules or recipes to follow here.
You can either add a small pinch of salt to your grounds before brewing or add a tiny pinch to an already brewed coffee to balance the flavours and round them out. Just make sure you don’t overzealously add it to every cup – only when you feel the coffee is of poor quality, has gone a little stale or has been over extracted.
Believe It Or Not, This Is Not A New Trend!
There has been a long standing tradition of adding a pinch of salt to coffee in Northern Scandinavia, Siberia, Turkey and Hungary. In fact in the coastal regions, where rivers meet the sea, people have been using brackish water to brew their coffee.
Brackish water has more salinity than freshwater but not as much as seawater. Using this to brew coffee increases both the intensity and foaminess of the end product.
We want your opinion – should you or should you not add salt to your coffee? Add your comments below.