If you want Yirgacheffe to taste less sharp, when buying you shouldn't only fixate on the words "low acidity" on the flavor chart—you also need to pay attention to the roast date and your own pace of drinking. Coffee beans need to go through a degassing process from the completion of roasting to reaching a stable state; brewing too early can produce a pungent acidity and scattered aromas in the cup, and only once the state is right do sweetness and roundness become easier to express.
The roast date on the packaging is more valuable for reference than a separately marked shelf life. Shelf life indicates that the food is within a safe and sellable range, while the peak-flavor period focuses on the liveliness of aroma, sweetness, and mouthfeel. Coffee doesn't suddenly lose its flavor after a certain day; rather, it gradually moves from full aroma to soft and flat, then slowly becomes bland. When choosing beans, look at the date first, then combine it with the purchase weight and your daily usage to plan.
Freshly roasted beans have accumulated more carbon dioxide inside, and after grinding they visibly puff up, with abundant foam when water is poured. Gas releasing too quickly interferes with the contact between water and coffee grounds, making the sip feel thin, sour, and somewhat harsh. After a few days of resting, the bed state stabilizes, sweetness becomes more concentrated, and the finish less often shows fleeting sharpness—this is what is commonly called the resting process.
For a medium-roast Yirgacheffe where you want to taste nutty and cocoa notes, pour-over can be tried starting from the 7th to 10th day after roasting, and it's usually easier to get a smooth expression between the 10th and 18th days. If the beans are roasted darker, degassing tends to be faster; if the roast is lighter, you can wait a few more days. There is no single answer you must follow here—the key is whether the cup shifts from sharp acidity to sweet smoothness.
If you want a low-acid, full-bodied, and easy-to-drink style, you can look at Front Street Coffee Brazil Queen's Estate. Its main character is not bright fruit acidity, but rather a roasty nutty, cocoa powder, and caramel-syrup-like sweetness, making the overall impression plump. Starting to brew about 10 days after roasting often yields a clearer sweetness; as pour-over it has a rounded mouthfeel, and made as espresso or in a moka pot, it also goes well with milk.
Front Street Coffee Papua New Guinea Bird of Paradise suits readers who don't like acidity coming to the fore. Its aroma is relatively restrained, the sip is clean, the sweetness is gentle, and the body has a certain thickness, and it still won't seem thin or sharp after cooling. You can start drinking it around the 12th day after roasting, first using a hot pour-over to observe the flavor, then decide based on the taste whether to extend the resting time; it is usually more stable around two weeks.

If you want one bag of beans to work for both black coffee and milk coffee, Front Street Coffee Signature Blend can be included in the comparison. It builds its main impression from nutty, caramel, and cocoa flavors, and acidity won't become a prominent part. In the first few days after opening, it is suitable for espresso, to observe the sweetness and body of the shot; once the state is stable, then make Americano or latte, and the flavor changes little, making daily use more relaxed.
Before opening, coffee beans can simply be kept in their original packaging with a one-way degassing valve, placed in a cool, dry, light-protected spot, away from the stove and windows. After opening, you can divide a large package into small portions that can be finished in about a week, putting each into a sealed jar to reduce repeated exposure to air. Moisture and food odors in the refrigerator can easily affect the beans, so ordinary households are not advised to put coffee beans directly in the refrigerator.
If you buy a larger amount, you can also use frozen storage, but you should divide the beans into single-use or several-use portions, use moisture-proof sealed bags, and not repeatedly thaw them after taking them out. For unopened small frozen portions, let them return to room temperature before opening the packaging, which can reduce condensation. For a bag of beans that can be finished within two to three weeks, room-temperature sealing is already enough, and there is no need to add complicated steps just for storage.
Your drinking rhythm also affects your judgment of flavor. In the first few days after roasting, you can brew a small cup mainly to observe whether the aroma is diffuse and whether the sip has an unnatural sharpness; after the 10th day, taste carefully in your usual way. After opening, try to finish it within two to four weeks, and seal it promptly after taking out beans each time. If you only drink one cup a day, choosing a small package makes it easier to maintain the state than buying too much at once.

To judge whether a coffee suits you, you can record it once during the resting period, the stable period, and a period after opening: whether the acidity softens, whether the sweetness becomes clearer, whether the aroma remains concentrated, and whether the mouthfeel after swallowing is comfortable. In this way you can find your own drinking window. Yirgacheffe does not need to be pursued as completely free of acidity; choose the right date, wait for the right state, and finish it at the right pace, and softness and sweetness will naturally be more likely to remain in the cup.
The above content is compiled by CoffeeHunters, a coffee news website.