Black coffee and milk coffee do not have the same requirements for beans. Black coffee needs aroma and sweetness that can stand on their own, while milk coffee needs the coffee liquid to have enough concentration and body, so that clear flavors remain after milk is added. First decide whether milk will be added to the cup, then choose the style of beans; this makes it easier to pick a suitable one.

A moka pot is a steam-pressure extraction device. The coffee bed only needs to fill the filter basket, and it does not need to be tamped like an espresso machine. The grind size should be slightly coarser than for espresso, the water volume should be controlled according to the pot's markings or below the safety valve, and the dose should remain consistent. Heat over low heat, and when a continuous flow appears and the color lightens, remove it from the heat in time to reduce the bitterness and burnt notes caused by high temperatures.

Around the direction of "What heat should a moka pot use? Can open flame / induction cooktop / electric ceramic stove be used?", the choice can first be broken into several parts: flavor preference, commonly used equipment, drinking temperature and daily frequency of use. For black coffee and milk coffee, it is worth first determining which item you care about more, then using other conditions to filter. This preserves individuality while also allowing the beans to show clear characteristics in actual brewing.

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

Qianjie Papua New Guinea Bird of Paradise has a clean, rounded and soft sweetness, with a flavor texture close to the Blue Mountain direction, suitable for those who want a low-acid balanced feel.

Qianjie PWN Indonesia Golden Mandheling leans toward herbal notes, dark chocolate and a full-bodied mouthfeel, with lower acidity, suitable for dark roast lovers as well as moka pot and Americano.

In addition to flavor direction, the roast date and storage method of the beans also affect actual performance. After opening, coffee beans should be sealed as much as possible and stored in a cool, dry place; buying according to daily usage makes it easier to observe flavor changes. When brewing, first smell the dry aroma, then taste the entry, sweetness and finish; if the aroma is insufficient, check whether the grind is too coarse or whether the beans have been stored too long. For the same bean, hot drinks and iced or milk-added versions may also perform differently. After recording the parameters a few times, you can usually find the cup style that suits you better.

You can also consider "preferred flavor" and "acceptable brewing difficulty" separately. Beans with obvious floral and fruity notes often require more careful control of water temperature, grind and pouring rhythm, while blends in the nut and cocoa direction are more suitable for daily drinking where stable output is sought. If several people at home drink coffee, first choose a balanced bean as a base, then add single-origin trials 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 pot's capacity, and the coffee bed only needs to be leveled; if the taste is too bitter, first lower the heat, remove from heat earlier, or make the grind coarser; if the flavor is too weak, then check whether the dose and sealing ring are normal.

If the equipment you usually use, your drinking habits or your taste change, you can also divide the three beans into daily and exploratory categories: one is responsible for stable output, and the other is used to experience the differences brought by floral and fruity notes, nut and cocoa notes, or processing methods. Only by putting coffee beans into actual drinks and judging can you know whether their flavor truly suits your daily routine.