Recently, I tried various store-bought coffee grounds, and I realized that the products are really quite different. The grind size and roasting level completely change the flavor, and I get confused about which one to choose. There are famous brands like Starbucks, UCC, and Tully's, too.

From comparing different kinds, I think whether the flavor remains good even after a week of opening is pretty important. Whether it retains sweetness without increasing off-flavors. If you like acidity, I seriously recommend Ogawa Coffee's original blend. It has a fruity and vibrant acidity, but you can also feel the natural sweetness. It’s also satisfying to drink, so it’s not too light.

If you prefer bitterness, MUJI's Dark Taste or Key Coffee's canned blend are good options. They have a rich body, and their flavor doesn’t change much after opening, making them suitable for people who want to consume slowly. Maruyama Coffee's blend features a chocolate-like sweetness, making it easy to drink for everyone. Its smooth texture is also well-received.

When choosing store-bought coffee grounds, I personally think it’s good to pay attention to how much they deteriorate after opening. The product you should pick varies depending on whether you drink every day or a few times a week. If you want a roasted flavor, Ito En's Baristas Roast is recommended. It has a strong roasted aroma, and the flavor doesn’t change even after a week of opening.

If you like a light taste, Ajinomoto AGF's Luxurious Mild Blend is a good choice. It’s free of off-flavors and easy to drink. It might be perfect for your daily coffee routine. Ultimately, the best store-bought coffee grounds depend on personal preferences and your drinking pace. Whether you prioritize acidity or bitterness, richness, or flavor longevity after opening—consider these factors when choosing, and you won’t regret it.