Advantages and disadvantages of coffee roaster the formula of Italian bean blending of coffee roaster in the market

Coffee roasters on the market are roughly divided into three types:

Direct Fire Roaster

Half Hot Air Roaster

Hot Air Roaster

Commercial coffee roasters are available in a variety of formats. Examples include PROBAT, Diedrich, San Franciscan, Toper, Garanti, Has Garanti, Joper, Proater, Loris, Fuji-Royal and Bonmac. Shanghai, China's three bean guest is also good oh.

Learning to roast beans will also be of great help to our coffee brewing techniques. Today, Chongqing Brista Coffee West Point Bartending Training School will share some knowledge about the bean dryer with you.

direct-fire baking

The boiler surface of the direct-fire baking machine has a perforated design. The holes have a certain size and spacing. The fire below will be directly transmitted to the furnace cabin. It requires a high level of skill on the part of the baker, and very careful adjustment of profit at each stage.

Advantages:

Short preheating time: Compared with hot air and semi-hot air baking machines, the furnace wall of direct fire baking machines is thinner, so the overall average preheating time of boilers is shorter.

The flavor of the manor beans can be expressed with uniqueness: the process of direct fire baking is to transfer heat directly to the raw beans through the fire, that is, the baking method in which heat energy is gradually deepened from the external organization of the raw beans to the internal organization. Therefore, baking straight fire is like cooking dumplings, to carry a few and water, the purpose is to make the inside and outside of the dumplings evenly heated, otherwise the skin is cooked, the filling is not cooked. The same is true for direct fire baking. You can adjust the vitality and damper according to the characteristics of raw beans, and choose whether to bake at low temperature or high temperature according to the condition of raw beans. Low temperature baking is suitable for more green bean input, while high temperature baking is suitable for less input.

Suitable for single bean or single bean coffee: Direct fire roasting can express the flavor and aroma of coffee, and the effect is better than hot air or semi-hot air roasting.

Disadvantages:

It is not easy to adjust the internal heat of the boiler: because the boiler as a whole has a hole design, when the fire provides the first vitality at the bottom of the furnace, the heat will be immediately dissipated from other holes, resulting in insufficient heat. But if the temperature is raised to replenish heat, it will scorch when the profit exceeds the amount of raw beans put in. Therefore, carefully adjust the heat according to the amount of raw beans, and it will be a good product. It is important to confirm when the yellow dot appears and when the first burst occurs.

Less uniform baking: direct baking tends to be unevenly heated because the heat stays inside the boiler for insufficient time. In this case, instead of adjusting the firepower, you can adjust the damper. When adjusting the damper, it also depends on whether the weather is high or low. The damper opens more on low pressure days than on high pressure days. Otherwise, the silver skin is not easy to discharge, thus producing more smoke, if the smoke discharge is not complete, the taste and aroma of coffee will be Defeat, there is a Smoky smell.