We often see a lot of people will directly take the boiling water to brewed coffee. In fact, such this water is not suitable to brew coffee, the coffee taste would be bitter, and it’s hard to enter in our mouth. However, the real suitable water temperature for brewing coffee is about 85 degrees to 92 degrees Celsius, if the water temperature is too low ,the coffee taste will be more acid, on the contrary, the temperature is too high will be more bitter, because the high temperature water will cause coffee powder extracts more. Although it is generally believed that the more extracts, the stronger of flavor, but it is not the best taste, and there may be some miscellaneous taste dissolve in coffee.
one way valve tells you that filter paper has different grades. The poor quality of filer paper will make the pulp taste dissolved in the coffee, so we suggest you can put the hot water to scald the filter paper before you use it that can be avoid the pulp flavor. In fact, there are many types of filter paper on the market. The materials are divided into hemp, bamboo fiber, cotton, and Japanese paper of high grade. The fiber length of filter paper will affect the taste, and some thicker filter paper also can correct the coffee taste. If you buy the coffee beans are not good by today, you can use the filter paper to correct your coffee taste, if the coffee beans are good, and you can use an ordinary filter paper.
Espresso has two basic features that is the upper layer is a foam layer like coffee color, while the under layer is a black coffee liquid. Such this coffee can be used to make latte art. We just pour around 30ml black coffee into the coffee cup, and then use the milk foam, pouring a little bit foam into coffee cup, and then use a spoon mix up, then the surface of the white milk foam becomes “coffee color foam”, and also it's floating on black coffee.