Dead space

As Dead spaceDead space is the empty space in a coffee grinder where ground coffee accumulates or clogs. High-quality coffee and... read more The dead space is the empty space of a coffee grinder in which ground coffee accumulates or... ground coffee accumulates or sticks to the grinder. High quality coffee and espresso grinders have a small or almost non-existent dead space and dead space and eject most of the coffee powder. If a grinder has a large dead space, much of the coffee powder remains behind and quickly loses its aroma through contact with oxygen.