Beverage preparation system

Abstract

There is described a beverage preparation machine comprising a centrifugal brewing unit () for preparing a beverage by centrifugation of an ingredient contained in a capsule and mixed with a carrier liquid, the centrifugal brewing unit () comprising a centrifugal cell () for receiving such a capsule (A,B,C); driving means () for rotating the centrifugal cell (); a regulator for regulating a rotation speed of the centrifugal cell () by controlling the driving means () based on a feedback signal representative of a difference between a desired rotation speed and a measured rotation speed of a capsule (A,B,C) rotated in the centrifugal cell (); the machine further comprising: liquid supply means () for supplying carrier liquid to the centrifugal brewing unit (); an optical reading arrangement () for reading a code on a periphery of a capsule (A,B,C) while the capsule (A,B,C) is rotated relative to the optical reading arrangement () in the centrifugal cell () and generating an output signal representative of the code; wherein the beverage preparation machine is 15 configured to compute the feedback signal using an output signal of the optical reading arrangement () representative of at least part of a code of a capsule (A,B,C) read by the optical reading arrangement ().