Ground coffee is when the beans from a coffee plant have been roasted, ground up, and then placed into bags for you to use at home or at a coffee shop. The size of the grind, or grind level, determines how quickly or slowly the water passes through the coffee grounds, and how much flavor is extracted. Plus, it affects the overall consistency of your cup of coffee. A finer grind will take longer to steep, while a coarser grind will steep more quickly, giving you a stronger cup of coffee.