Chapter 32
If milk purchased in bottles is clean, there should be no sediment in the bottom of the bottle after it has been allowed to stand for some time. Also, if it is fresh, it will not sour quickly after it is delivered, so that in case it is properly cared for and sours quickly, it may be known to be stale milk. However, if it does not sour in the normal length of time, it should be looked on with suspicion, for, as has been pointed out, such milk may have added to it a preservative to prevent souring. The housewife may expect milk that is delivered cold and is guaranteed to be sanitary and fresh to remain sweet at least 24 hours, provided, of course, it is placed in the refrigerator immediately upon delivery and kept there until used.
REGULATIONS GOVERNING THE GRADES AND DESIGNATION OF MILK AND CREAM WHICH MAY BE SOLD IN THE CITY OF NEW YORK
The following cla.s.sifications apply to milk and cream. The regulations regarding bacterial content and time of delivery shall not apply to sour cream.
Grades of Milk or Cream Sold in the City of New York:
GRADE A Milk or cream (Raw)
Definition: Grade A milk or cream (raw) is milk or cream produced and handled in accordance with the minimum requirements, rules and regulations as herein set forth.
Tuberculin Test And Physical Condition: 1. Only such cows shall be admitted to the herd as have not reacted to a diagnostic injection of tuberculin and are in good physical condition. 2. All cows shall be tested with tuberculin and all reacting animals shall be excluded from the herd.
Bacterial Contents: Grade A milk shall not contain more than 60,000 bacteria per cubic centimeter, and cream more than 300,000 bacteria per cubic centimeter when delivered to the consumer or at any time prior to such delivery.
Necessary Scores: Equip. 25, Meth. 50, Total 75
Time of Delivery: Shall be delivered within 36 hours after production.
Bottling: Unless otherwise specified in the permit, this milk or cream shall be delivered to consumers only in bottles.
Labeling: Outer caps of bottles shall be white and shall contain the words Grade A, Raw, in black letters in large type, and shall state the name and address of the dealer.
Pasteurization: None.
Milk or cream (Pasteurized)
Definition: Grade A milk or cream (pasteurized) is milk or cream handled and sold by dealers holding permits therefor from the Board of Health, and produced and handled in accordance with the requirements, rules, and regulations as herein set forth.
Tuberculin Test And Physical Condition: No tuberculin test required, but cows must be healthy as disclosed by physical examination made annually.
Bacterial Contents: Grade A milk (pasteurized) shall not contain more than 30,000 bacteria per cubic centimeter and cream (pasteurized) more then 150,000 bacteria per cubic centimeter when delivered to the consumer or at any time after pasteurization and prior to such delivery.
No milk supply averaging more than 200,000 bacteria per cubic centimeter shall be pasteurized for sale under this designation.
Necessary Scores: Equip. 25, Meth. 43, Total 68.
Time of Delivery: Shall be delivered within 36 hours after pasteurization.
Bottling: Unless otherwise specified in the permit, this milk or cream shall be delivered to the consumer only in bottles.
Labeling: Outer cap of bottles shall be white and contain the word Grade A in black letters in large type, date and hours between which pasteurization was completed; place where pasteurization was performed; name of the person, firm, or corporation offering for sale, selling, or delivering same.
Pasteurization: Only such milk or cream shall be regarded as pasteurized as has been subjected to a temperature averaging 145 degrees Fahrenheit for
Grade B Milk or cream (Pasteurized)
Definition: Grade B milk or cream (pasteurized) is milk or cream produced and handled in accordance with the minimal requirements, rules, and regulations herein set forth and which has been pasteurized in accordance with the requirements and rules and regulations of the Department of Health for pasteurization.
Tuberculin Test And Physical Condition: No tuberculin test required, but cows must be healthy as disclosed by physical examination made annually.
Bacterial Contents: No milk under this grade shall contain more than 100,000 bacteria per cubic centimeter and no claim shall contain more than 500,000 bacteria per cubic centimeter when delivered to the consumer or at anytime after pasteurization and prior to such delivery.
No milk supply averaging more than 1,500,000 bacteria per cubic centimeter shall be pasteurized in this city for sale under this designation. No milk supply averaging more than 300,000 bacteria per cubic centimeter shall be pasteurized outside of the city for sale under this designation.
Necessary Scores: Equip. 20, Meth. 35, Total 55
Time of Delivery: Milk shall be delivered within 36 hours and cream within 48 hours after pasteurization.
Bottling: May be delivered in cans or bottles.
Labeling: Outer caps of bottles containing milk and tags affixed to cans containing milk or cream shall be white and marked Grade B in bright green letters in large type, date pasteurization was completed, place where pasteurization was performed, name of the person, firm, or corporation offering for sale, selling, or delivering same. Bottles containing cream shall be labeled with caps marked Grade B in bright green letters, in large type and shall give the place and date of bottling and shall give the name of person, firm, or corporation offering for sale, selling, or delivering same.
Pasteurization: Only such milk or cream shall be regarded as pasteurized as has been subjected to a temperature averaging 145 degrees Fahrenheit for not less than 30 minutes.
Grade C Milk or cream (Pasteurized) (For cooking and manufacturing purposes only.)
Definition: Grade C milk or cream is milk or cream not conforming to the requirements of any of the subdivisions of Grade A or Grade B and which has been pasteurized according to the requirements and rules and regulations of the Board of Health or boiled for at least two (2) minutes.
Tuberculin Test And Physical Condition: No tuberculin test required, but cows must be healthy as disclosed by physical examination made annually.
Bacterial Contents: No milk of this grade shall contain more than 300,000 bacteria per cubic centimeter and no cream of this grade show contain more than 1,500,000 bacteria per cubic centimeter after pasteurization.
Necessary Scores: Score 40
Time of Delivery: Shall be delivered within 48 hours after pasteurization.
Bottling: May be delivered in the cans only.
Labeling: Tags affixed to cans shall be white and shall be marked in red with the words, Grade C in large type and "for cooking" in plainly visible type, and cans and shall have properly sealed metal collars, painted red on necks.
Pasteurization: Only such milk or cream shall be regarded as pasteurized as has been subjected to a temperature averaging 145 degrees Fahrenheit for not less than 30 minutes.
NOTE.--Sour milk, b.u.t.termilk, sour cream, k.u.myss, matzoon, zoolac, and similar products shall not be made from any milk of a less grade than that designated for Grade B and shall be pasteurized before being put through the process of souring. Sour cream shall not contained a less percentage of fats than that designated for cream.
No other words than those designated herein shall appear on the label of any container containing milk or cream or milk or cream products except the word certified when authorized under the State law.
CARE OF MILK
50. NECESSITY FOR CARE IN THE HOME.--If milk of good quality is bought, and, as has been suggested, this should be done whenever it is possible, the next thing to do is to care for it in such a way that it may be fed to the family in the same condition as it was when delivered. It is, of course, of prime importance that the dairyman deliver clean fresh milk, but this is not sufficient; the milk must remain in this condition until it is used, and this can occur only when the housewife knows how to care for it properly after it enters the home. It is possible to make safe milk unsafe and unsafe milk positively dangerous unless the housewife understands how to care for milk and puts into practice what she knows concerning this matter. Indeed, some of the blame laid to the careless handling of milk by dairymen really belongs to housewives, for very often they do not take care of milk in the right way after delivery. As too much attention cannot be given to this matter, explicit directions are here outlined, with the idea of a.s.sisting the housewife in this matter as much as possible.
51. KEEPING MILK CLEAN IN THE HOME.--Immediately upon delivery, the bottle containing the milk should be placed in the coolest place available, never being allowed to stand on the porch in the sun or where such animals as cats or dogs may come in contact with it. When the milk is to be used, the paper cap should be carefully wiped before it is removed from the bottle, so that any dirt that may be on top will not fall into the milk. If not all the milk is used and the bottle must be returned to the cool place where it is kept, it should be covered by means of an inverted drinking gla.s.s or, as shown in Fig. 6, by a gla.s.s or porcelain cover. Such covers, or _sanitary milk_ _caps_, as they are called, are very convenient for this purpose and may be purchased at a slight cost.
52. Another precaution that should be taken is never to mix stale milk with fresh milk, because the entire quant.i.ty will become sour in the same length of time as the stale milk would. Also, milk that has been poured into a pitcher or any other open vessel and allowed to stand exposed to the air for some time should never be put back into the bottle with the remaining milk. Such milk is sure to be contaminated with the germs that are always present in the dust constantly circulating in the air. It is sometimes necessary to keep milk in a vessel other than the bottle in which it is delivered. In such an event, the vessel that is used should be washed thoroughly, boiled in clean water, and cooled before the milk is poured into it.