Best before date of coffee bean(For reference)：
Roasted coffee bean：few days after (ageing) - within 3 months (best flavor)
Grinded coffee powder：within 2 weeks (grinded coffee powder will lost the flavor very quick)
*After best before date, the coffee can still be served, however, the flavor would keep losing
*Commercial coffee bean package usually show the best before date around 1-2 years.
Best storage method：
Store in the sealed bags or bottles, place in cool shelter and avoid sunshine, away from strong smell materials.
''One way exhaust valve'' can release the gases(CO2 produced by the coffee bean) in the package, and air would not get in the package. This kind of package can prevent oxidation effectively.
Aventage of coffee：
Refreshment, anti-oxidation, anti-melancholy, it is said that coffee have medicine usage.
According to scientific research, coffee bean contain protein, carbohydrate, fat, nicotinic acid, Potassium, fiber and water. Coffee also contains some healthy ingredients such as caffeine, tannic acid and alkaloid.
People who are not recommended to drink coffee：
Teenage undergo development,pregnant, breastfeeding mother, elderly; people who are on an empty stomach, diarrhea, hyper acidity, stomach disease, duodenal ulcer, intestinal allergy syndrome
Healthy and tasty tips：
Choosing the fresh roasted and high quality coffee bean, grind and brew immediately. The low concentration black coffee produced would be the best choice.