Roast levels refer to the degree to which coffee beans are roasted, affecting their flavor, aroma, and color. The main categories include light roast, medium roast, and dark roast. Light roasts are typically bright and fruity, preserving the beans' original characteristics. Medium roasts balance acidity and sweetness, while dark roasts have a bold, rich flavor with a smoky or bitter finish. Each roast level results from different roasting times and temperatures. Light roasts are usually roasted for a shorter time, while dark roasts undergo longer roasting, leading to oil on the surface. Understanding roast levels helps coffee drinkers choose their preferred taste profile.