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Why can you feel a little sweetness when tasting black coffee?

Published: 2026-04-04 Author: World Gafei

Last Updated: 2026/04/04, Most people only taste bitter, sour and astringent coffee. In fact, raw coffee beans contain about 50.8% sugar. After baking at high temperature, most of the sugar will be converted into caramel. This caramel effect brings a unique tea brown to the coffee, forming a source of aroma and bitterness, while the remaining sugar leaves some sweetness. In addition, when roasting high-quality coffee beans,

Most people only taste bitter, sour and astringent coffee. In fact, raw coffee beans contain about 50.8% sugar. After baking at high temperature, most of the sugar will be converted into caramel. This caramel effect brings a unique tea brown to the coffee, forming a source of aroma and bitterness, while the remaining sugar leaves some sweetness. In addition, it is released when roasting quality coffee beans.

The tannin, combined with brown caramel, also produces a slightly bitter sweetness.

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。