The Baccarat Barista Brillante Coffee Knock Box is a container and tub that has been specifically designed to 'knock' the puck or coffee grounds from the portafilter or group head of your coffee machine after making your coffee. Using a coffee knock box is simple, after making a coffee in your machine, remove the portafilter or group head from the machine and give it a tap or knock against the edge of the knock box. The Baccarat Barista Brillante Coffee Knock Box is ideal when making coffee for yourself, a crowd and even for collecting the grounds for composting.