Castello cheeses remarkable popularity both in Denmark and abroad.” Castello was acquired by Arla Foods, who expanded Castello into cheese markets in North America. Castello blue cheeses were developed in the 1960s. The curds are dipped into salt water, drained, and put into molds. The cheese is punctured with tiny holes and then brought into the ripening room, where it stays for about 15 days. It is then washed, cut, packed, and put in a "cooling room" for about a week at a temperature close to freezing. The washed rind hosts various molds that add to the cheese's mildly spicy flavor. It
Cheese Centers for Disease Control has warned pregnant women against eating soft-ripened cheeses and blue-veined cheeses, due to the listeria risk, which can cause miscarriage or harm the fetus. Although cheese is a vital source of nutrition in many regions of the world and is extensively consumed in others, its use is not universal. Cheese is rarely found in Southeast and East Asian cuisines, presumably for historical reasons as dairy farming has historically been rare in these regions. However, Asian sentiment against cheese is not universal. In Nepal, the Dairy Development Corporation commercially manufactures cheese made from yak milk and a