I must say this since the beginning of roasting, the help of this Directive on the color of roasted coffee is not at all with just enough to make your own roasted coffee. There are several factors involved.
Now I have to go tell that the development of coffee beans during the roasting process that they call it, is divided into a number of academic degrees and you stage. The best measure of coffeeRoast I would say is, once the coffee beans still exactly the same taste and originality, as it was as green beans, fresh coffee, coffee. However, this is a harmony in relation to the real flavor with the roasted coffee. Especially in a dark roast coffee aroma to the right of the origin of green coffee to grow to be of secondary importance for the development of green coffee. If your coffee is for example relativelydark roast does not really matter what the origin of coffee, however, more like it would taste the same. The determination of the roast for your coffee is just for testing and research, but I list below the highlight of the thread, such as coffee beans go through the various stages of roasting.
Understand that every work roasting machine in different ways at different times and may even go from one level to another. So it is reallyIt 'important that you look at the color of coffee beans too.
Degrees of temperature and texture for frying
* Roasted Green: 00-75 F/24 C
Here before us is the level of toasting. The coffee bean is green, or seed, that is. This really is with the wet method with the color of beans usually white.
* As of 4:00 minutes 270 to pale f/132 C
If you use a drum roaster with this procedure, it is necessaryRemember that it takes longer to heat the beans, when compared with an air roaster. An air-spit is really much more quickly and the whole process of warm-up in about 2 minutes can be achieved.
* Degrees of yellow Early 6:00 min – 327 C f/163
Only at this stage, the beans continue to lose water through steam but there is no indication that the beans be increased accordingly. This is the stage where it will be definitely known beforeRoast when you see the first crack in the coffee beans.
* Yellow-Tan colored piano 6:30 min – 345 C f/174
When it reaches this position change, the beans darken and the area can have light and dark brown surface. You lose a little water and the smell of today is probably the first phase of roasted coffee, which actually smells like bread.
* Light brown piano 8:00 min – 370 C f/188
The coffee bean isactually since mid-plane and is also losing a bit 'of silver paint "skin" to add the bean.
* Brownish phase of 9:00 min – 393 C f/200
On stage, the bean has a light brown to dark brown due to the browning of glucose in the coffee bean.
* Very first crack begins 9:20 min – 401 C f/205
Only at this stage, to hear the first explosion, and this may be a sign of how the first crackstarted.
* Top cracks under 10:00 minutes – 415 C f/213
During the time of the first floor continues, the color of the grains is irregular and spotty. In addition to this variety of bean size, since the crack growth starts increasing.
F/219 426 C – * 1 Crack reaches 10:40 minutes
From this stage on the first floor is completed, and the bean has been roasted on the plan called City. The surface is almost completely but continueshave dark spots, and remain hard edges. By now the coffee beans begin to release CO2.
Minutes * City 11:05 435 f/224 C
From this period, the bean is the first crack reaches the surface and actually begins, look even more. The period between this class and at this stage is very short, only 15-30 seconds, but many things are taking place in this period. The temperature of the grain begins to rise and the bean beginsFracture, which means that it is 2 to Get cracking.
City * Total 11:30 min – 444 C f/229
Currently, coffee beans, the roast has reached the level of this city is full, is the first to second crack. try all that a newbie in this there is no easy task, what is being determined, but once you get a couple of times you get to try the rotation are. The surface of the coffee bean has an oil layer and the edges are much softer.
* City full11:50 min – 454 CF/234
If the second step in the second half of the slot announcement came only at Full City roast. If the beans to cool only the best measure is to try to cool it down immediately, because then better to stop the roasting stage you want.
* Vienna, Light French 12:15 minutes – 465 C f/240
Once the second step means that the note is held in Vienna, a light French roast. This type of phasealso known as Continental. This is the level when the character is higher than that of roast character's home. The reason carbon is roasted flavors took over. However, the coffee beans taste something great when they have reached that stage.
* Full French 0:40 minutes – 474 C f/245
From this level, all the coffee beans have passed the stage of being ready and right to use the coffee roasting as mixed. The beans are burned andThe elements of taste, soluble solids and oils from the beans are like smoke. Only at this stage, the temperature at 474 C f/245 that go far beyond what is the recommended temperature, ie 465 f/240 C.
Remember that this phase lasts only 30 seconds, so that the substantial changes. If you choose to buy a machine for roasting coffee, keep in mind that the cooking time could be different with previously defined.