In order to get the coffee beans we know and love today, there is a process that needs to take place that transforms what physical properties contained within green beans and roasts them making them into roasted beans.
This process is absolutely vital to producing a wonderful cup of coffee. What happens is that when the green bean is being roasted it will expand and will end up being almost double the size whilst shifting its colour and density. The colour of the bean takes on a yellow colour to a light brown then onto a dark brown colour.
This wonderful process is what brings out the amazing flavour of the coffee because the green beans are expanding and taking on these new colours and developing their taste, smell and size to become mature. The heat that they are being roasted at beings out these characteristics, because if they would not have the same taste if they were not roasted.
Whilst the beans are being roasted, the oils are found on the bean surface and the bean will continue to ‘brown’ until it is taken out of the roasting process.
You will find that most coffee is tended to be roasted in commercial environments on quite a large scale but you will find that some coffee purists may try and roast their own beans so that they can have total control over the entire process of making coffee so that the optimum flavour and freshness can be extracted from the coffee beans.
