The force of the water and the pattern of the spray from the brewer's spray head, and how this spray interacts with the shape of the brew basket, create this turbulence. The spray head is installed in the coffee brewer, and is not clogged or obstructed by coffee or water residues. The appropriate brew basket for your particular brewing equipment is being used. The principle cause of flavor loss after brewing is continuous heating. Continuous heat will break apart the organic materials, and the coffee will develop a sour or bitter taste with smoky overtones.
Thermal containers are a better way to hold coffee.
They are insulated and airtight, preventing evaporation, and will retain the aromatic compounds of the coffee. Because the coffee is not subjected to continuous heating, the coffee can be held for as long as 45 minutes before flavor characteristics will begin to change and dissipate. If your brewing equipment cannot brew directly into a thermal pot, immediately transfer the brewed coffee to a thermal container.