In the morning light, gulping down a big mouthful of iced Americano is all about the crisp refreshment and instant alertness; while cradling a hot Americano on a slightly chilly afternoon, what you smell is the caramel aroma floating through the room. Both are espresso diluted with water, yet the hot and cold versions taste completely different, and the core secret behind this lies in the coffee's extraction yield and the concentration in the cup. Temperature not only changes the activity of aroma molecules, but also quietly reshapes the taste buds' perception of strength.

What the coffee world often calls concentration and extraction yield are actually two different things. Extraction yield represents how much flavor material from the coffee beans has been brought out by the hot water, while concentration represents the proportion of coffee material in the entire cup of liquid. If under-extracted, it often tastes thin, sour and noticeably watery; if over-extracted, bitter char and dryness will linger in the throat. As long as you find the balance point, the whole cup of coffee becomes round, sweet and smooth.

When making Americano at home, you first need to stabilize the cornerstone of espresso. Taking the general recipe recommended by Qianjie as an example, load the portafilter basket with 18 g of finely ground coffee, tamp it down, then set the machine to extract 36 g of espresso, with the extraction time controlled at around 26 seconds. Under this extraction rhythm, the sweetness and aromatic substances in the middle section of the coffee are fully released, while the rough, off-flavors of the tail end are kept out, laying a good foundation for the subsequent dilution with water.

If the coffee tastes astringent and bitter, it means the extraction is on the high side, and you usually need to adjust the grinder setting half a notch coarser, or slightly shorten the extraction time by one or two seconds; if the coffee tastes unfocused and sharply sour, then the extraction is on the low side, and you can grind finer or slightly raise the extraction water temperature. Through such careful fine-tuning, you can adjust an unsatisfactory taste to smooth and delicious without changing beans.

After the espresso is extracted, the amount of water added directly determines the concentration in the cup. When making a hot Americano, 36 g of espresso is usually diluted with about 216 g of hot water, a ratio of around 1 to 6, and maintaining the temperature at around 70°C allows the caramel and nutty aromas to fully volatilize. When making an iced Americano, since melting ice will continuously dilute the concentration, you can use 36 g of espresso diluted with 90 g of water and 160 g of ice, keeping it bright and balanced on the palate.

To make a cup of hot Americano that is rich, substantial and full of crema, the beans should be dark-roasted rather than light. Qianjie's classic blend is born for this, composed of Brazil, Indonesian Mandheling and a small amount of Vietnamese beans, with deep roasting bringing out full nutty and caramel sweetness. Brewed as a hot drink, you can taste a warm butter cookie flavor, and as an iced drink it can also withstand the dilution of melting ice, full of the richness of roasted chestnuts.

If you prefer a light, elegant taste like fruit juice, dark-roasted beans with too much water may show bitter char, so you might as well choose a light-to-medium roasted fruit-forward bean. Qianjie's Strawberry Candy espresso blend combines Costa Rican, Colombian and Ethiopian coffee beans, with extremely full floral and fruity aromas. Made into an iced Americano, it is as sweet and thirst-quenching as biting into a fruit gummy; made into a hot Americano, it shows the sweet-and-sour taste of warm purple grape juice.

If you want to balance the sense of everyday staple coffee, able to be drunk both strong and light, Qianjie's Sunflower Warm Sun blend is a good choice. It uses Ethiopian sun-dried Red Cherry paired with Honduras Sherry beans, and medium roasting preserves the vanilla and rich wine aroma while also having the sweetness of ripe stone fruit. Whether diluted with hot water and slowly savored for its warm sweetness, or gulped as iced coffee to feel the refreshing interweaving of vanilla and nuts, its performance is stunning.

Once you understand the interactive relationship between extraction yield and concentration, making Americano no longer depends on luck. Rich, dark-roasted beans can withstand the big gulps of added water and ice, while light-roasted floral and fruity beans can bloom in layers within a bright, watery body. In the morning or afternoon, choose a bag of beans that suits your mood, turn the grinder setting slightly to fine-tune the extraction, and in the cup at hand, you can drink a smooth, aromatic coffee at just the right temperature.