How to bake coffee beans at home? why are coffee beans roasted?

The simplest thing is to think of coffee as peanuts, stir-fry them like peanuts, but stir-fry them dry without oil. The quality of raw coffee beans determines 80% of the coffee taste, so as long as you buy good beans, you can still exceed the delicious coffee at home. 1. The simplest and most primitive way-pan stir-frying daily cooking, cooking wok every family has, in the long time before there is no professional baking machine, coffee is roasted in a pan, the quality of coffee stir-fried in the pot may not always win. But the best quality coffee beans are artificially fried, in fact, a lot of fried goods have such a situation. The advantage of the machine is stable quality, can be simple standardized hype! But the function of man is that machines can never be replaced! to stir-fry coffee beans in a pot, you should first clean the pot used to stir-fry coffee to remove the grease from it. The household pot has been used for cooking for a long time, and there must be a lot of residual oil on it. So be sure to wash the coffee before stir-frying! Under normal circumstances, wash the pot and boil the water, then add the water and boil it, pour out the water and then fire it to dry! Repeat this 1-2 times. Heat the pan to dry the water and you can't see the obvious grease! Fire and heat, when the pan is dry and there is no moisture, put in the coffee and raw beans! The quantity should not be too much, 100-200 grams is suitable! As for the use of electricity, gas or other heat sources does not matter. The key is to control the heat! This can be compared to other fried or fried foods that require moderate and stable firepower in the whole process. Use a small fire at the beginning and adjust it slowly later. Keep stirring the coffee beans when stir-frying! At the same time, pay attention to the color change of coffee beans! if the color of coffee beans changes quickly, but the change is not overall. This situation shows that the fire is too big or the mixing frequency is not enough. If you feel that mixing is already possible, there is no possibility of improvement. This shows that the fire is really too big! When this happens, you should turn down the fire immediately and put the pot away at the same time, so that the temperature in the pot will drop quickly! After lowering it, put it on the stove with adjusted firepower and continue to heat and fry. If the color of the coffee beans does not change for a long time (3, 5, 10 minutes, or even longer), the fire is too small. In this situation, firepower should be increased appropriately. The color of coffee beans changes slowly, and this change is holistic and uniform, which shows that you have a very good grasp of the heat! In this case, you can pay attention to the coffee burst sound while paying attention to the color of the coffee beans. As the baking continues, the color of the beans slowly changes from light green to yellow, then brown, brown, and finally black. In this process, the coffee bean from yellow to brown in the process of a burst, but this burst process is very short, sometimes not very obvious, sometimes only 3-5 sound ends, this is a burst. In the process of turning brown, there was a burst, which lasted 2-3 minutes or more, and the sound frequency was so high that it crackled like a firecracker! This is the second explosion. The second explosion is very easy to detect. In general, the second explosion has just started, that is to say, about 10 sounds have been heard. At this time, when there is a cease-fire, the beans you get are medium baking-city-wide baking. Bean characteristics: bean noodles are dry, there is no oil or slightly out of oil, brown beans have small black spots! The second explosion sound continued the baking of the beans also deepened, and by the time there was no sound at all, that is to say, the second explosion was over, the beans had basically been blackened and carbonized seriously. Of course, this is also a baking style, many people like this burnt taste! Generally speaking, from the beginning of the golden color of beans to the dark state of the later stage, the beans are roasted normally, and you can cease fire at any time, and you can drink all the coffee you get! As for when to cease fire, it depends on your preference! In general, the deeper the roasting degree of coffee beans is, the more bitter the coffee is. At the same time, the worse the taste of coffee is, the lower the nutritional value is. Fully carbonized beans are indeed unique in flavor, but they really don't have much nutritional value! Therefore, it is not recommended that you bake to this level. As far as our Yunnan beans are concerned, if we don't like the slightly sour style, medium and deep baking is recommended. The beans in Yunnan are slightly sour in the case of high altitude and shallow baking. Microwave oven, electric oven many people choose to use microwave oven or electric oven. Many microwave ovens and ovens cannot stir the beans inside. If that's the case. It is recommended that there are not too many beans baked each time. At the same time, do not stack or pile beans! In other words, lay the beans flat on the plate! Just the first floor. This can achieve good results without stirring! The change of bean color and popping sound are still the key to judging the baking condition of beans. In this regard, please refer to the relevant content above. There are people who don't like coffee to buy roasting coffee tools. Here is a piece of advice for everyone. If you really don't want to stir-fry in a pan and need to buy tools separately, you are advised to buy an electric oven with rotating function. There will be an iron cage in the accessories of this kind of oven. Put the beans in the cage and install the cage in the middle of the oven. The cage can be rotated, and there are heating strips on and off the cage. The kind that can set temperature and time! This kind of oven has the function of a professional bean dryer to a large extent! The quality of the baked beans is very good, comparable to a professional bean baking machine. In general, the scale of the coffee shop or coffee drink business is not too large, this kind of oven can meet the demand! special hint: recently, not a few friends have asked to buy our coffee raw beans, their own baking will appear similar to diesel, kerosene or other taste-smell that can not be described in precise words. After specific inquiry, I learned that they used barbed wire clamps to hold beans on LPG, gas and gas stoves and baked beans over open fire! In particular, I would like to remind you not to do this, because it is not normal for the baked beans to have no smell. This is a very simple truth, no longer too much explanation! Generally speaking, if you don't want to buy special tools, you can stir-fry them in a pan, but you can still fry very good beans with patience. If you find it troublesome to stir-fry, there is no microwave or oven. It is recommended to buy cooked beans directly! add: after the coffee beans are roasted, the coffee needs to be cooled down, so that the flavor of the coffee is better! Specific how to operate, you can play their own. There are not too many coffee beans to bake for your own use. after baking, spread the beans flat on iron, marble, plate (iron or porcelain) and stir. In this way, the temperature of the beans will soon drop down, if there are conditions, you can also use fans, fans and other things that can accelerate the air flow of the beans, speed up the heat dissipation and cooling of the beans! Lift (remove) the silver skin after the beans cool. You can grind, brew (brew) coffee and drink it. For those who use ground coffee for the first time, remember to add sugar and milk powder! about temperature: the general bean noodle temperature is controlled at: 230-250 degrees Celsius!