9. You don’t pay enough attention to the coffee beans.
The two main coffee varieties are Arabica and Robusta. Arabica has a more delicate taste while Robusta is more bitter and contains more caffeine. And the difference in price is pretty noticeable: Arabica coffee is 2 times more expensive than Robusta. As a rule, the Arabica beans are larger and have an oval shape. Robusta beans are more round. So, if the beans are round and small, but the manufacturer says that the product is “100% Arabica,” then they’re probably trying trick you. In addition, there should be no chips or stains on the coffee beans.
8. We store coffee beans wrong.
Coffee beans have 3 mortal enemies: air, light, and heat. Pay attention to the packaging. It should be airtight and consist of 3-layers of foil with a valve to allow air to leave the package, but prevent it from getting inside.
Coffee beans can be stored in a glass or tin can. In the latter case, it’s important to check that there’s no rust, otherwise the coffee will have a metallic taste. You should not buy or store coffee in plastic packaging — this indicates a low quality product. If you buy coffee in paper packaging, it’s better to store coffee beans in a lightproof and airtight container, since air and odors can easily ruin the coffee in a paper bag.