Hints on Dairying

by T. D. Curtis

HEATING.

After the milk is all in, or the requisite amount is in the vat, the heat may at once be started and raised to some point between 80 and 86 degrees. If we set below this, the rennet works too slow; if we set above, it is thought to work too fast—so custom has fixed upon this range of temperature for setting, and there appears to be no valid objection to it. But while the temperature of the milk is being raised, and before, it should receive frequent stirrings to keep the cream from rising, and thus becoming partially or wholly wasted. The rennet should by no means be added until the temperature stops rising—or so nearly so that by the time the rennet is stirred in and the stirring stopped, because the milk begins to coagulate, a stationary temperature will have been reached.

COLORING.

The coloring fluid should be added just before the rennet is—unless white cheese is made. There is a limited demand for white cheese for the London market. But do not make the color too high—as there is a limited demand for high-colored goods, and this mainly from the South, in spring and fall. Nor should the color be too pale, as there is really no demand for pale cheese. It should be either white or of a medium hue—a bright, golden yellow. There is a demand for uniformity of color, as buyers often want large lots, all of the same hue or shade. In selecting such a lot, they may rule out first-class cheese that is too pale or too high-colored. The universal use of the same manufacture of coloring extract guaranteed of uniform strength, might secure uniformity in coloring. But this is doubtful and difficult. A better, and we think, a feasible way, would be to have a standard color—like those accompanying paints—furnished to every cheese maker as a guide, and let him color to it as nearly as possible. In this way, a close approximate to uniformity of color might be secured. He could then use whatever coloring fluid he chose, and his eye would be his guide. Coloring does not improve the product. If it does no harm, it does no good beyond gratifying the eye and deceiving the palate through the common notion that high color and high flavor go together.

SETTING.

Theoretically, 98 degrees or blood heat would seem to be the temperature for setting, as rennet is the most active at this point. Usually, 82 degrees in warm weather, and 86 degrees in cool weather, are the points at which the rennet is added in setting. But there is no reason for a different temperature at different seasons, except that in cool weather the temperature is liable to run down a little—which should not and would not be the case, if the make room were so constructed that the temperature could be controlled and kept at summer heat.

OTHER DETAILS.

Enough rennet should be added, as a rule, to cause thickening of the milk to begin in 20 minutes, at 82 degrees. More or less rennet may be used, as it is designed to have cheese cure more or less rapidly. As a rule, the more rennet is used, the lower should be the temperature at which the milk is set and the curd worked. Agitation of the milk should be kept up for at least 15 minutes, where coagulation begins in 20 minutes, or as long as it can be and not prevent a solid coagulation. The stirring after the rennet is incorporated is merely to keep the cream from rising. The less cream gets to the surface, the less waste there will be. In a cool room, where the surface cools quickly and there is a falling of the temperature of the milk, there will be a thin cream on the surface. This will form a soft cream curd, which will adhere to the sides of the vat, to the rake, and to the hands, and be quite annoying. The amount is trifling, but the annoyance of the thing is enough of itself to make it desirable to keep the cream down; and a summer temperature of the room is useful for this purpose, aside from the comfort and the better handling of the curd, from first to last.

KEEP THE TEMPERATURE EVEN.

After the milk begins to thicken, a cloth should be thrown over the vat to keep the surface warm. A convenient way is to tack a cloth to slats a little longer than the vat is wide, putting the slats a foot or eighteen inches apart. This is easily rolled up and set aside, when not wanted, and is easily unrolled over the vat when needed. There should be no raising of the temperature after the rennet is added and the mass comes to a standstill. If there is, the portion next to the sides and in the bottom of the vat will get the most heat, and there the rennet will work the fastest and the curd will become tough before it is firm enough on the surface. Therefore, let the heat be stationary after the rennet is added and until the curd is cut fine, and keep the heat as even as possible all this time.