Place about 40 g of fatty animal fatbeefmeat in 100cm3 beaker Add about 15cm3 of 40M sodium hydroxide solution Boil the mixture for about 15minutesStir the mixture Add about 50cm3 of distilled water as you boil to make up for evaporation Boil for about another 15minutesAdd about four spatula end full of pure sodium chloride crystals Continue stirring for another five minutes Allow to cool Filter of decant and wash off the residue with distilled water Transfer the clean residue into a dry beaker Preserve