Starbucks Corporation
EXTRACTION CELL

Abstract:

A method of preparing an extract can include loading extraction material into an extraction cell having a first portion and a second portion with ground coffee at a density of between 0.2 g/ml-0.4 g/ml and the ground coffee having a particle size between 200 .mu.m to 400 .mu.m. The method can further include introducing a flow of extraction medium through the first portion of the extraction cell. The method can include, within less than 75 seconds of introducing a portion of the flow of extraction medium into the extraction cell, withdrawing from a filter at the second portion of the extraction cell, extract that has been extracted from the extraction material by the portion of the flow of extraction medium introduced into the extraction cell. The method can include, within less than 30 minutes of introducing a portion of the flow of extraction medium into the extraction cell, withdrawing from a filter at the second portion of the extraction cell, extract that has been extracted from the extraction material by the portion of the flow of extraction medium introduced into the extraction cell.