To drink coffee, you must understand the common sense of coffee, fine coffee science.

V. the initial processing of coffee

1. Drying method 2, washing method 3, semi-washing method

VI. Preservation of coffee beans

1. Buy freshly roasted coffee beans

2. Finish the roasted coffee as soon as possible

3. Reduce the contact between air and coffee beans

4. Avoid the sun

5. Store in a ventilated and low temperature place

Taste and appreciation of coffee

1. Aroma → dry aroma, wet aroma

The taste of boiled ↓↓

It doesn't taste like before cooking.

2. Bright

3. Thickness

4. Texture → is meticulous and rough.

8. Five rules for making good coffee

1. Fresh coffee beans 2, correct grinding 3, good water quality 4, suitable water temperature 5, gentle cooking.

9. Shelf life of coffee beans

1. The average humidity of unbaked coffee beans is no more than 60%, which can be preserved for 1-2 years.

2. Roasted coffee beans (used for cooking Espresso) can be preserved for about 3 weeks under room temperature and air conditions.

3. Roasted coffee beans (other than boiling Espresso) can be preserved for 30-45 days under room temperature and air conditions.

4. grind the powdered coffee beans for 5-10 minutes.

Roasted coffee powder packaging: plastic aluminum (PE/AL/PET) three composite film packaging bag vacuum packaging, can guarantee quality for 24 months, non-vacuum packaging can guarantee quality for 3 months. Tinplate (high frequency resistance weld) can be guaranteed for 24 months in vacuum packaging and 3 months in non-vacuum packaging.

Roasted coffee bean plastic aluminum (PE/AL/PET) three-layer composite film packaging bag with embedded one-way valve for 18 months, non-embedded one-way valve packaging for 12 months, tinplate (high frequency resistance weld) vacuum packaging for 24 months.

Roasted and sold now, roasted beans in paper and plastic bags have a shelf life of only 7 to 15 days, whether sealed or not.

Tips for flushing and cooking

1. The key point of using a hand kettle is that the water output should be stable and continuous, not to mention that there should be a large column of water to make coffee. Of course, the skill of injecting water must be practiced many times before it can be skillful. At the same time, always keep the knack of "gentle brewing" in mind.

2. It is best to prepare a thermometer to measure the water temperature of cooking. When cooking shallow baked beans, try to keep the water temperature between 95Me and 90 degrees. Different beans and different baking depth have the right temperature.

3. You can try to circle, all in one direction from beginning to end, or clockwise.

4. Steaming at the same time lies in the extension of soaking time, so that the flavor of coffee beans can be completely extracted, which is in order to comply with the characteristics of fast flow rate and short soaking time. All the times and time of steaming can be adjusted according to the thickness of coffee beans, at the same time, it is very stable to extend the time of water injection, you can also try not to use steaming.

5. The amount of water injected can be a little more than the predetermined amount: for example, when you want to flush out 200cc coffee, you can inject 250cc water, on the one hand, the coffee powder will absorb part of the water, on the other hand, a certain amount of water in the filter cup can be the whole overbrewing process to maintain a consistent flow rate because there is enough water pressure above, so as to prevent the last part of the water from staying in the coffee for too long.