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Roasting degree of coffee beans Coffee roasting technology Italian coffee machine extraction leakage

Published: 2024-11-05 Author: World Gafei
Last Updated: 2024/11/05, A series of chemical changes occur during the baking process. After about 5-25 minutes of baking (depending on the temperature selected), the green coffee beans lose some humidity and turn yellow. In this process, the coffee beans will swell, changing from a strong, high-density raw bean to a low-density fluffy state. After this process, the size of the coffee beans will about double, starting

Baking involves a series of chemical changes. After roasting for about 5-25 minutes (depending on the temperature chosen), the green beans lose some moisture and turn yellow. During this process, coffee beans expand, transforming from a firm, high-density green state to a low-density, fluffy state. During this process, the beans roughly double in size and begin to take on a light brown color after being lightly fried. After this stage is complete (approximately 8 minutes of baking), the heat will decrease. The color of coffee quickly changes to dark. When the preset roasting depth is reached, cold air can be used to cool the coffee beans to stop the roasting process.

Baking is generally divided into Light Baking, Medium Baking, City Baking and Deep Baking. Light Roast Coffee Beans: May have a strong smell, crispness, high acidity as the main flavor and slight body. Medium-roasted coffee beans: have a strong alcohol, but also retain a certain acidity. City-roasted coffee beans: dark brown on the surface, acidity replaced by a slightly burnt bitterness, flavor mostly destroyed. Deep Roast Coffee Beans: Dark brown in color, oily on the surface. For most coffee beans, alcohol is significantly increased and acidity is reduced. Roasted coffee is actually a way of processing food. Professional coffee roasting is a personal expression of the roaster. Just getting started with specialty coffee

Coffee beans of different roasting degrees

Coffee beans of different roasting degrees

(SPCIAITYCOFFEE) The biggest trouble is the name of the baking degree. For example, CITY, FULLCITY, FRENCH, ESPRESSO, etc. are all different because of the different baking machines used and the different production areas, and produce different baking degrees of color. In addition, some roast degrees are named after blends: ESPRESSO, for example, is a blend of coffees with a specific roast degree used to make ESPRESSO, which may have completely different flavors even if the color looks the same. So the choice of bean type, baking temperature and baking method, baking time are the main factors to determine the final flavor

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