Castello cheeses cheese, named Noble Blue Cheese, Extra Danish Creamy Blue (also available sliced), Soft Blue, and Crumbled Blue Cheese. In 2012, the Denmark's Finest Havarti Cheeses were added to the Castello brand, followed by Saga Blue Brie in 2013. The Alps Selection Cheeses; Hirten, Bergkase, and Weissbier, were launched in the United States in the end of 2012, and were the first of their kind available in the United States. In some markets, the name Blue Castello is used for a triple-cream blue cow's milk cheese. Castello was established in 1893 by Rasmus Tholstrup of Denmark. His son, Henrik, bought a
Blue cheese curd-air interface. In pressing the cheese, the curds are not tightly packed in order to allow for air gaps between them. After piercing, the mold can also grow in between the curds. Blue cheese Blue cheese is a general classification of cheeses that have had cultures of the mold "Penicillium" added so that the final product is spotted or veined throughout with blue, or blue-grey mold and carries a distinct smell, either from that or various specially cultivated bacteria. Some blue cheeses are injected with spores before the curds form, and others have spores mixed in with the curds after