SwEETfiNED Condensed Milk — Fii^ung 97 



Within recent years the use of circular tanks with jacket and 

 vertically suspended, revolving coil, has been adopted in numerous 

 factories with most satisfactory results, and this method of cooling 

 this viscous product promises to greatly assist to solve the cooling 

 problem. Rectangular vats with horizontal coils, which also have 

 been tried for this purpose, however, are less desirable, as they 

 tend to cause the condensed milk to foam excessively. 'This foam- 

 ing is caused by the fact that the horizontal coil revolves intO' the 

 milk, beating air into it. In the case of the circulator tank, the 

 vertical suspended coil when revolving moves upward, out of 

 the milk, thus avoiding incorporation of air and excessive foam- 

 ing. The circular vat with the suspended vertical coil has the 

 further advantage that the condensed milk does not c6me in 

 contact with bearings and glands, these parts being entirely de- 

 tached from the vat. For prevention of gritty and settled milk, 

 see also Chapter XXIII on "Condensed Milk Defects," page 191. 



Chapter VII. 

 FILLING 



The sweetened condensed milk is put on the market in 

 barrels and in hermetically sealed tin cans. 



In Barrels. — Barrels, similar to glucose barrels, are generally 

 used. They hold from three hundred to seven hundred pounds 

 of condensed milk. New barrels should be used for this purpose. 

 Barrels paraffined on the inside are most satisfactory, as they are 

 more apt to be free from mold spores. Old glucose barrels are 

 dangerous to use, as they often contain decaying remnants of 

 glucose, which cause the condensed milk to ferment. The new 

 barrels are steamed out and drained thoroughly. The filling is 

 facilitated by the use of a large galvanized iron funnel with a 

 discharge one and one-half inches in diameter, or an ordinary 

 milk pail with a nipple one and one-half inches in diameter in 

 the bottom of the pail. When filled, a double layer of cheese 

 cloth is placed over the bunghole, and the bung is driven in level 

 with the staves. The barrel goods are sold to bakeries and candy 

 factories. 



In Cans. — The canned goods are intended for the retail 

 market. The cans used hold from eight ounces to one gallon of 

 condensed milk. Most makes of tin cans for sweetened condensed 



