STARTER MAKING 



29 



add enough milk to continue the propagation of the 

 original culture, being careful thereafter to keep 

 at 70° F. Stir every half hour as before. Mix 



Fig. 25. — Trunnioned Starter Can. This Starter Can 

 is trunnioned on its frame in such a manner that 

 the starter may be drawn oil from the top, leaving 

 the lower, less contaminated portion for propaga- 

 tion. The agitators serve to keep the starter in a 

 uniform condition while ripening. 



The space between the jacketed sides may be used 

 for cold water in the summer, and warm water in 

 the winter to maintain an even temperature about 

 70° F. 



thoroughly the starter and skim-milk in can and 

 allow to stand at 70° F., until the proper consistency 

 is reached, when it is ready for use. The following 

 blank form may be used in this exercise: 



