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
Maytag Blue cheese forward, with the time spent setting, cutting and dipping nearly cut in half. Also, after dipping the cheese and allowing it to cook in hot whey, the draining time was cut from 20–30 minutes to 3–5 minutes. "Penicillium" is then added to the finished product, which produces its characteristic green veins. After the rounds of cheese are made by hand, the cheese is aged in specially designed caves where they are exposed to high humidity and cool temperatures. The process produces cheese with more uniform color, flavor, and texture than previous processes, resulting in a consistent product. of blue cheese: