Roasting Coffee is a centuries old craft. The art of roasting coffee has made great improvements in recent times, but still requires years of dedication to achieve perfection. Although hundreds of articles and books on this fascinating subject has been written, and almost all (not all) is about the chemistry and thermodynamics of roasting coffee is known, can not be less than an exact science. Even less for espresso, therequires particular attention to roast their success.
The excellence of a roasting espresso is a quest without end, even the most experienced roastmaster. If you are ready to become a professional - or just an amateur - coffee roaster, willing to try, try again until you seek the perfect teacher roast. You can talk to a surprisingly roastmasters expressed with 20 years of experience and he will tell you that he learns something new every day:Roasting coffee is a journey of continuous learning.
Roasted coffee it is composed of 5 phases: cleaning, roasting, cooling, grinding and packaging, each of them is the best espresso in the cup, bring to the consumer, but in this article, we focus only on toasting.
Two major 'T' for a successful coffee Cooking temperature and time critical. Roasting coffeeie only a specific application of heat to the green beans for some time: This process breaks down carbohydrates and fats, oils, resulting in the creation of taste and aroma. Technically, coffee roasting is a chemical process by which aromatics, acids and flavor of other ingredients to create balance, or in a way that the aroma, acidity, aftertaste make the change, and the body of the coffee, as desired by the roaster.
Roasting temperature is typicallyranges from 700 ° C to 1000 ° F. 3-5 roasting time can vary up to approx. 20 minutes, depending on the type of coffee used (often) different mixtures, the desired color and flavor of the coffee production, the device for the interaction between coffee and the air inside the device itself, and also to outside weather conditions.
In the first stage of coffee roasting, the beans turn from green to pale yellow, yellow. Ifstop the process of roasting coffee at this stage, the beans are still many of their origins and characteristics of their trains home are not masked by the features roast. If the time of roasting coffee is too short for a particular coffee bean, not all chemical reactions take place. The longer the period, the darker roasted coffee. But if it is too long, coffee-roasting can destroy many aromatic compounds, so that the coffeetaste bitter or burnt flavor.
Thus, controls experience roastmaster is often the state of roasting the beans: it can not replace machine complicated "feeling".
At the end of the process, roasted coffee beans have their typical taste and aroma, and achieve their ultimate dark brown color, typical Italian espresso. The weight is now 18-20% lower than the original green beans.
Mastering the mix of coffee + Airinto the toaster + weather + temperature + time is therefore an art (not science), which shows the true Italian espresso roasting assistant. computer-controlled machines for roasting and toasting scientific perspective can help, anyway - but never replace - the experience and the constant visual inspection, which must be adopted by roastmaster well. How to manage all relevant factors, is often kept secret is the magic formula that will never be all roastmaster. Public
Incidentally, it should not surprise that a sound at all: Have you ever seen can prepare the secret recipe of the delicious cake of your grandmother? Nobody was. It was not very likely. You never hear them say, 'X grams of butter, sugar grams Y, Z cl of milk, just in this temperature exactly 22 minutes, right? Instead, you can remember how you said "just a little '... a little' ... but not too ... for a few minutes", etc. .. Theyis not very scientific, is not it? But as for the final taste!? (I still remember the "Semolina" made by Grandma Ada ...)
The same effect with the coffee roasting espresso: "art" wins against science. Of course, while new equipment and knowledge error too large to let each roast and espresso media. But the human factor is the experience of roastmaster for distinguishing a generic product from the commercial realGourmet espresso.