Coffee roaster structure usage self-made coffee roaster

Coffee roaster structure usage self-made coffee roaster

In recent years, there has been an upsurge of roasting a small amount of coffee beans, and there are many household roasters on the market, and it has become quite simple to roast coffee beans by themselves. At present, household roasters can be divided into three types: self-ignition type, hot air type and drum type. Although these are not very sophisticated professional models, as long as they are handled properly, the roasted coffee beans are still mellow.

1. Direct firing: ceramic roaster or pan

Direct-fired appliances are the simplest and can be pans or Japanese-made long-handle ceramic roasters. The ceramic roaster is closed, has the effect of stewing, and can bake coffee with delicious and complex taste; its taste is the most natural and thick. Nowadays, this kind of ceramic roaster is often available outside Japan. The effect of the pan is not good, so it is not recommended to use this appliance.

The baking method of the ceramic roaster is very simple, first put the raw beans into the pot, and then shake the long handle on the gas stove. The baker can control the firepower and the baking time by himself.

The disadvantage of this tool is that there is no hot air to blow off the silver film and debris, so it is more likely to smell. In addition, it has no cooling function. After baking, you have to pour the beans into a basket and cool them with a fan or electric fan.

2. Hot air type: hot air type popcorn machine or hot air type household roaster

The hot air popcorn machine was originally used for popcorn, but then someone used it to bake coffee beans, and it worked well, and it was all the rage for a while. Its disadvantages are: it does not have the function of collecting debris, the hot air makes the debris film fly everywhere, and it takes effort to clean it up afterwards; and the heating speed is so fast that the first burst can be heard in about 4mure 5 minutes, the water has not completely evaporated, and the taste is not full enough and slightly sour. The popcorn machine can bake 100 grams of raw beans at a time, but not enough or too much. It does not have the function of automatic shutdown, so you have to look after it when you use it, otherwise it may burn the whole pot of beans.

In areas where coffee is popular, these machines can be bought in coffee stores or websites. When in use, as long as the raw beans are put in, the baking degree is set, and the start button is pressed, which is completed automatically from baking to cooling.

Hot air household roasters have the function of collecting debris and cooling, which can produce clean baked beans. The ideal baking degree setting should be to judge the temperature and then stop baking automatically. However, the baking setting function of these machines is just a timer, and when the time is up, it will automatically switch to the cooling stage. Because the temperature in winter is very different from that in summer, and the time required for roasting coffee is also different, there may be a difference of more than one scale when setting the roasting scale.

3. Drum type household roaster

The traditional roaster is a drum type, which is roasted by the fire source. This kind of roasting method has the characteristic of stewing, which will make the coffee bean flavor more mature and taste fuller, which is similar to the effect of pottery pot. At present, there is a kind of AIpenrose machine made by Swissmar company in the market, which belongs to the drum roaster for household use. It can bake half a pound of coffee beans at a time, and the baking time (including cooling and outgoing beans) takes about 21ml 25 minutes. The deeper the baking degree, the longer it takes.

When in use, as long as the raw beans are put in, the baking degree is set, and the start button is pressed, which is completed automatically from baking to cooling. The baking degree recommended by this machine is based on half a pound of raw beans. If the baking amount is less than half a pound, the actual baking time is short, then man-made intervention is needed. When the desired baking degree is reached, press the "cooling" button, otherwise a pot of beans will be burned out; if the baking amount exceeds half a pound, uncooked conditions may occur. In addition, its heating rate is slow, and the first bursting sound will be heard in about 13 murals for 15 minutes, so there is enough time to evaporate water before entering the high temperature cracking stage, so that the coffee beans can be ripe inside and outside, forming a rich texture. Therefore, most bakers think that it is close to commercial professional roasters, so Alpenrost has a good market in North America.