Thursday, October 22 2026

Resting and Blooming of Espresso Blend Coffee: Conceptual Differences, Time Windows, and Brewing Recommendations

Red wine requires decanting, while coffee has the concepts of resting and waking beans. After roasting, coffee beans trap carbon dioxide inside them, accounting for about 2% of their weight, and this gas needs time to slowly release. If freshly roasted beans are ground and brewed immediately, the gas pressure obstructs the exchange between hot water and coffee compounds, resulting in a dull flavor and even a dry, bitter sensation. Front Street Coffee recommends a resting period of 4 to 7 days after roasting; dark-roasted beans, being more porous and containing more gas, require slightly longer. At the same time, coffee aromas dissipate along with the carbon dioxide, so Front Street advises drinking the coffee within one month of roasting. This article will also use Indonesian Mandheling as an example to break down how the wet-hulled process gives it a rich, herbal flavor, and will include Front Street Golden Mandheling's brewing parameters. [more…]