72 STERILIZING 



fresh milk is for the most part readily washed 

 away by cold water. On no account should hot 

 water be used at this stage, as it makes milk stick 

 fast. 





BRUSHING WITH ALKALI POWDER 



The acid of sour milk is neutralized by the 

 alkali in washing powder. The butter fat is 

 changed into soap by alkali powder. For this 

 reason, a washing powder containing soda removes 

 dried curds and grease. Washing powder should 

 be used in luke-warm water, and applied with a 

 brush to cans, pails, tanks, and vats. 



