George E. Newell,
Hand-book on cheese making
(1889)
“ As cheese making is merely an imitation of nature’s workings in curdling milk in a calf’s stomach, the nearer we can follow that process on the start, the closer to perfection we get. Long experience has demonstrated that a temperature between 80° and 85° Fahrenheit is the best degree of warmth for milk to have attained when it receives the peptic fluid. A temperature above that expels the butter globules into the whey, and below, the active principle of rennet is not brought out and tardily and incompletely coagulates the mild solids. ”
