"2.5 cups" is a measurement commonly used in cooking and baking. It refers to a volume that is equivalent to 20 fluid ounces or approximately 590 milliliters. This measurement is often used for ingredients like flour, sugar, or liquids, helping to ensure accurate proportions in recipes. In the context of measuring, a standard cup is equal to 8 fluid ounces. Therefore, 2.5 cups can be calculated as 2 cups plus an additional half cup. Using precise measurements like 2.5 cups is essential for achieving the desired taste and texture in dishes, making it a fundamental skill in the culinary arts.