CHURNING AND WASHING BUTTER. 227 



ing cream in bottles is yet in use in many of the smaller house- 

 holds of Europe, where the amount of cream is limited to a 

 small quantity donated by cow-owners. The next step toward 

 churning on a large scale was to get a large wooden box or 

 barrel run by power or by hand. The churns which are in use 

 at the present' time in American butter-factories are termed 

 "combined churns." They are so arranged as to admit of 

 churning, washing, salting, and working without removing the 

 butter from the churn. This style of churn is now being in- 

 troduced into Europe. Owing to their superior worth they will 

 soon be in general use there as well as here. They keep flies 

 away from the butter during fly time; the temperature of the 

 butter can be controlled in the churn, and the handhng of the 

 butter during salting and working is obviated. 



Conditions Affecting the Churmability of Cream. 



Temperature. — The temperature of cream is one of the most 

 influential factors in determining the churnability of cream. 



Fig. 137. — The Dairy Queen combined churn. 



The higher the temperature of the cream, the sooner the churn- 

 ing process will be completed. Too high a churning tempera- 

 ture, however, is not desirable. It causes the butter to come 

 in soft lumps instead of in a flaky granular form. This is 

 deleterious to the quality of the butter. It causes, first, a greasy 

 texture of the butter, and, secondly, it causes the incorporation 



