Coffee is one of the most popular drinks worldwide with over two billion cups drunk each day! Roasters and baristas from every corner of the globe are continually seeking ways to make the perfect coffee. There are many tried and tested methods, but few have ever put it down to science. But recently, researchers from the University of Limerick have created a mathematical model to help out coffee connoisseurs.
Using a mathematical model, the researchers discovered that the size of a coffee grain is extremely important to the flavour that it produces. Smaller granules produce a more bitter coffee, whilst the larger ones produce a more weak smokey taste. This trend is linked to the surface area of each of the grains and to a step in the brewing process called extraction. Extraction is the movement of coffee from its solid form as a coffee bean to its liquid form when it is dissolved into hot water.
The researchers from Limerick have just published their findings and have put forward a brand new model of coffee extraction that can help brewers worldwide achieve their quest for the world’s best coffee. They found out that coffee is extracted from bean to water in a two-step process:
The information that was discovered revealed that the biggest effect on coffee taste was the size of the grains used. The key to unlocking the best flavour is in the extraction. If you over-extract your coffee you get a bitter taste, if you under-extract, your coffee has a weak and smoky flavour. The size of the grain is a big factor in this – the larger the... Read more
A recent study among 500,000 people aged over 35 years from 10 European countries, has revealed that an extra cup of coffee a day could strengthen a person’s lifespan – even if it is decaffeinated.
The research was published in the journal The Annals of Internal Medicine, but some experts have said that it is impossible to say for definite that drinking coffee has a protective effect on health and a longer life.
Researchers from the International Agency for Research on Cancer and Imperial College London say that drinking more coffee is linked to a lower risk of death – particularly for diseases of the gut and heart.
The research asked the people taking part, how much coffee that was drunk and then looked at deaths over an average of 16 years. But according to Professor Sir David Spiegelhalter, from the University of Cambridge – if the estimated reductions in death were really down to coffee then drinking an extra cup of coffee every day would extend the life of men by around three months and women by around one month on average.
Therefore, although the research includes a large amount of people being studied over a long period of time – it would seem that the jury is ‘still out’ considering the results!
However, there have been many other previous studies over the years regarding coffee, caffeine and the benefits on health, which have more proven results. These include coffee reducing the chances of suffering from Type 2 diabetes, Alzheimer’s Disease and Dementia, Parkinson’s Disease, some Cancers and Heart Disease.
We also know that a single cup of coffee contains several essential nutrients: