The flavor of a cup of coffee is not just about whether it is sour or bitter; it also includes aroma, sweetness, body, mouthfeel and finish. When choosing beans, first decide whether you want floral and fruity notes, nutty and cocoa notes, or a balance between the two, then match that to the corresponding origin, processing method and roast level.

A moka pot is a steam-pressure extraction device. Just fill the filter basket with grounds; there is no need to tamp it down like an espresso machine. The grind should be slightly coarser than for espresso, the water level should be controlled according to the markings on the pot body or below the safety valve, and the dose of grounds should stay consistent. Heat over low heat, and when a continuous flow of liquid appears and the color becomes lighter, remove it from the heat in time; this can reduce the bitterness and burnt notes brought by high temperatures.

Around the topic of "moka pot cleaning and maintenance, what to do if it rusts or leaks?", you can first break the choices into several parts: flavor preference, commonly used equipment, drinking temperature and daily frequency of use. When sorting by flavor profile, it is worth first deciding which aspect you care about most, then using the other conditions to narrow things down. This way you can keep your individuality while also letting the beans show clear characteristics in actual brewing.

Qianjie Brazil Queen Estate has nutty, cocoa and caramel sweetness, with a soft acidity, and it maintains a round mouthfeel in pour-over, espresso and moka pot.

Qianjie Classic Blend leans toward nutty, cocoa and caramel notes, with good strength and body, and is suitable for espresso machines, moka pots and everyday milk coffee.

Qianjie Dark Cocoa Blend leans more toward dark chocolate, roasted nuts and a thick sweetness, with lower acidity, and is suitable for espresso, Americano and milk coffee.

Besides flavor direction, the roast date of the beans and the way they are stored will also affect actual performance. After opening, coffee beans should be sealed as much as possible and kept in a cool, dry place; buying according to daily usage makes it easier to observe changes in flavor. When brewing, first smell the dry aroma, then taste the entry, sweetness and finish; if the aroma is insufficient, you can check whether the grind is too coarse or whether the beans have been stored too long. For the same beans, the performance may also differ when drunk hot, iced, or with milk. After recording the parameters a few times, you can usually find the cup style that suits you better.

You can also consider "the flavors you like" and "the brewing difficulty you can accept" separately. Beans with obvious floral and fruity notes often require more careful control of water temperature, grind and pouring rhythm, while blends in the nutty and cocoa direction are better suited to daily brewing where stable results are desired. If several people at home are drinking coffee, first choose a balanced bean as a base, then add single-origin experiments according to personal preference; this makes comparison easier than buying many beans of similar style at once.

The coffee-to-water ratio can first follow the capacity of the pot body, and the grounds can simply be leveled off; if the taste is too bitter, first lower the heat, remove it from the heat earlier, or make the grind coarser; if the flavor is too weak, then check the dose of grounds and whether the sealing ring is working properly.

If the equipment you usually use, your drinking habits or your taste change, you can also divide the three beans into everyday and exploratory categories: one for stable results, and another for experiencing the differences brought by floral and fruity notes, nutty and cocoa notes, or processing methods. First use flavor direction to screen out types that do not suit your taste, then compare aroma and mouthfeel among specific beans; your judgment will be closer to daily drinking.