Basic and advanced sharing of coffee roasting experience and knowledge

From turning on the heat engine and putting in the coffee raw beans, watch the temperature of the roaster rise until the return point, wait for the first explosion, or wait for the second explosion to complete the baking. Roasting coffee may seem simple, but it is actually an art that requires experience.

Generally speaking, experienced bakers will have an in-depth understanding of the original taste and characteristics of raw beans. From the area where coffee is grown, climate, altitude, and the way coffee fruits are treated after harvest, to the water content of coffee beans during packaging, and the temperature and humidity stored at the export of coffee beans, all affect the taste of coffee baked. Understanding the impact of these elements on roasting is exactly the roasting skills pursued by coffee experts.

Many experienced coffee roasting companies should not have much problem with purchasing, roasting, selling, and inventory management of coffee beans. However, for many novice roasters, they don't know how to choose the quantity they need to buy, or how long it will take to sell the coffee. Even experienced coffee roasting companies sometimes encounter too much coffee in stock to be sold within a certain period of time, leaving bags of raw coffee beans that have been kept for a long time and do not know what to do with them.

Boutique coffee is a high-end luxury, generally speaking, in the economic downturn, the number of people to buy will be reduced. Sometimes due to changes in seasons and weather, improper preservation in the harvest process will affect the quality of raw coffee beans, resulting in accelerated aging of raw coffee beans. So whatever the reason, large coffee roasters or their own roasters must know how to tailor a unique baking curve to determine the best flavor and flavor spectrum of coffee.

In the coffee roasting world, the baking curve is a technical term for recording changes during roasting, understanding the water content of raw coffee beans, and carefully measuring the weight before and after roasting. In addition to recording the production area and baking capacity, the weightlessness ratio should also be recorded after the baking is completed.

Adjust and record the dehydration status of coffee roasting in detail, how to use a few percent of the capacity of the coffee roasting boiler, how to adjust the hot air exhaust air throttle, whether the coffee can be copied and roasted by the original curve, what is the temperature recovery point of the coffee, etc.

When paying attention to the process of coffee change, the baker can use the above factors to judge and design the baking curve. To put it simply: when the raw beans go directly into the roaster, how long will it take to warm up before the curve on the thermometer begins to climb up with a smile. When the coffee beans are dehydrated and turn orange, how long does it take to produce the first explosion, to reach the ideal color card, or to reach the baking level of the second explosion? The roaster needs to take how many baking samples to judge the time of the coffee.

No matter the new bean or the old bean, all have its unique baking curve, so we must accurately judge the bean and the time of the bean, and master the best flavor.

In the process of recording the baking curve, carefully blindly test each batch of baked beans, record them, and accurately grasp the key elements, you can easily grasp the taste of coffee beans! Remember that each batch of coffee beans has a different baking curve and roasting methods.

The environmental factors of raw coffee beans in the producing areas will also affect the quality of raw coffee beans. The rainfall in the producing areas this year and last year, or the drying process of coffee before export, is also one of the keys.

High-altitude and ripe coffee beans usually last longer and have a longer life. Because of the high density of raw coffee beans, if the dry environment is good, the taste of the coffee itself will not change much.

Out-of-season coffee beans are not good, and old coffee is sometimes added to some coffee varieties. to put it simply, African coffee beans taste clean, bright and slightly thin when fresh. After being placed for a period of time, the volatile aroma of the coffee is thicker and sweeter.

Bake, cup test, bake, cup test! After continuous adjustment and tasting different coffee curves of roasted coffee, make the coffee taste better!

Use your senses: eyes, nose, ears, and mouth to really learn more about the characteristics of coffee. Grab the perfect baking curve.