Coffee roaster exhaust roasting technology Italian espresso
Coffee roaster exhaust roasting technology Italian espresso
1. Probat coffee bean roaster in Germany
Old brands, large and medium-sized machines, semi-automatic, full-automatic various types, sophisticated design, high price.
2. Japanese fuji-royal coffee bean roaster
The performance of the coffee bean roaster made by fuji in Japan is also good, but the same price is not cheap.
The choice of the material of the inner pot is the most tangled place when making the product. in the initial design, because the stainless steel material can be rolled up and welded, it is convenient to manufacture, while the cast iron material has a great initial investment, so stainless steel has become a very tempting choice. but after the test, it is found that the stainless steel inner pot can not evenly transfer heat to the whole inner pot, resulting in some points that will overheat and scald coffee beans. A good stainless steel pot is a composite structure, with more than three layers at the bottom, with an outer layer of stainless steel at the bottom, with a copper plate in the middle as an important heat conduction layer to disperse the uneven heat energy at the bottom of the pot, so that the internal stainless steel layer can be heated evenly. But this kind of technical solution is used in the inner pot of the roaster, we really can't do it.) (PS: the three-layer structure requires a large punch to integrate the structure and exhaust air. Moreover, what people do is a flat plate, and the roaster is an inner pot.)
So after spending almost all the money at that time, we made the R500 series cast iron inner pot out of cast iron, which is still in use today.
The material of cast iron made the inner pot of R500 reach the same material level as most imported models, and we were proud of it for a long time until we learned about plasma spraying technology.
Far-infrared materials are widely used in the food industry, but no one has ever tried to use it in the harsh environment of a roaster. The change of temperature difference, inner pot expansion, friction and coffee bean impact all pose challenges for us. Until we tried to use plasma spraying technology to firmly attach ceramic far-infrared materials to the inner pot, this problem was still solved. Knocking and friction will not destroy its structure.
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Coffee taste training solution formula-flavor description introduction to the origin of taste varieties
Coffee taste training solution formula-flavor description taste variety introduction taste performance is consistent with the hot time, or even better. Taste: coffee beans contain about 5-8% sugar, most of which are converted to caramel after baking, which is the source of aroma and bitterness, leaving a little sweetness in the unconverted sugar; tannin is released during baking and combines with caramel to produce a slightly bitter sweetness.
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The correct way to beat the coffee pressed powder
Coffee beans and milk are refrigerated in the refrigerator at a temperature of about 4 degrees: easy to keep quality, the milk temperature for iced coffee is usually 6570 degrees, and the milk temperature for hot coffee is usually 6570 degrees, so the lower the temperature of the milk is, the longer it can be heated, and the milk bubbles are more and finer. Iced coffee with ice foam, the tool is the milk bubble tank, the milk level should be high, filter a certain height, hit it
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