5 Gallons of Milk (Not UltraPasteurized); 3/8 tsp MA11 Culture; 1/2 tsp ( ml) Single Strength Liquid Rennet; 3 tbs Cheese Salt; Calcium Chloride if Using. Jack cheese is made from pasteurized whole, partly skimmed or skimmed cow's milk. Unaged jack is ripened for a week, has high moisture and good melting. Monterey Jack is an American semi-hard cheese, customarily white, made using cow's milk. It is commonly sold by itself or mixed with Colby cheese to make a.