WHEN THE FAT HAS BEEN COMPLETELY SAPONIFIED , REMOVE REFRIGERATED REFLUX CONDENSER , AND USING A GRADUATED PIPETTE ADD 1 ML OF GLYCERINE . CONTINUE TO HEAT UNTIL MOST OF THE ALCOHOL HAS EVAPORATED ( THIS IS INDICATED BY THE APPEARANCE OF HEAVY FROTHING ) .
APRES SAPONIFICATION COMPLETE DE LA MATIERE GRASSE , ENLEVER LE REFRIGERANT A REFLUX , AJOUTER A L'AIDE D'UNE PIPETTE GRADUEE 1 ML DE GLYCERINE ET CONTINUER A CHAUFFER JUSQU'A CE QUE LA MAJEURE PARTIE DE L'ALCOOL SOIT EVAPOREE ( ON S'EN APERCOIT A L'APPARITION D'UNE FORTE MOUSSE ) .
