Stun the flesh split. 
Open in sheets.
Flush the head
inside a river
which is fragile
and caught.
Be abundant then
plunged, to become
clean and most common.

From page 202-203 of The Complete Guide to the Art of Modern Cookery by Auguste Escoffier, translated by H. L. Cracknell and R. J. Kaufmann (John Wiley & Sons, Inc. 1979).