What is a primary ingredient in Danish Blue Cheese Butter?

Danish Blue Cheese Butter is primarily characterized by its use of blue cheese, which gives the butter its distinct flavor profile. This type of cheese is known for its creamy texture and bold, tangy taste, which enhance the richness of the butter. The addition of blue cheese transforms the butter into a gourmet spread or culinary ingredient, making it suitable for various dishes, from savory applications to gourmet cooking.

The other options do not align with the primary ingredients typically found in Danish Blue Cheese Butter. Feta, goat cheese, and cheddar each have their unique textures and flavor profiles, but they do not carry the same characteristics or culinary traditions associated with blue cheese, which is essential to the identity of Danish Blue Cheese Butter.