The defined ridges are spiraled to the top of the cone which allow the air to escape and the grounds to fully expand. The ridges allow for even brewing and proper air flow and water distribution. The spiraled ridges cause a turbulence to the brewing, which aids in the aromatics of the system. The steep cone adds depth to grounds layer, extracting optimum flavor. The large hole at the bottom makes smooth extraction possible, changing taste with different speeds of water.