A beginner's guide to blue cheese — what makes it blue, how the veins form, the main types, and how to start enjoying it.
Blue cheese inspires strong feelings. Some people adore its pungent, salty bite; others can't get past the sight of mold growing through it on purpose. Either way, blue cheese is one of the oldest and most fascinating categories in the cheese world. Understanding how it works makes it far less intimidating — and a lot more enjoyable.
What Makes Blue Cheese Blue
The blue-green veins running through these cheeses are colonies of mold, most often Penicillium roqueforti or the closely related Penicillium glaucum. Far from being a sign of spoilage, this mold is added deliberately and is perfectly safe to eat. As it grows, it breaks down fats and proteins in the cheese, producing the sharp, peppery, tangy flavors and the soft, creamy texture that define the style.
How the Veins Form
The mold needs oxygen to grow, and this is the secret behind the marbled appearance. The mold spores are mixed into the milk or curd early in the process, but they stay dormant inside the dense, airless paste. To wake them up, cheesemakers pierce the young wheels with long needles, creating channels that let air penetrate deep into the cheese. The mold then blooms along these air channels, spreading outward into the veins you see when the cheese is cut. The pattern of piercing largely determines the pattern of the blue.
The Main Types of Blue Cheese
Blue cheeses vary widely. Roquefort, from France, is made from sheep's milk and is salty and intense. Gorgonzola, from Italy, ranges from sweet and creamy (dolce) to sharp (piccante). Stilton, from England, is mellow and rich. Danish Blue (Danablu) is sharp and economical, while Cabrales from Spain is fierce and powerful. Cambozola is a mild hybrid of brie and blue for newcomers. Despite their differences, all share that characteristic mold-driven tang.
What Blue Cheese Tastes Like
Blue cheeses are typically salty, tangy, and savory, with a peppery or spicy edge and a creamy, sometimes crumbly texture. The intensity ranges enormously, from gentle and buttery to mouth-fillingly pungent. The saltiness is partly functional — salt helps control the mold and preserve the cheese.
How to Enjoy Blue Cheese
If you're new to blue cheese, start mild — a Gorgonzola Dolce or Cambozola — and pair it with something sweet, like honey, figs, or pears, which beautifully balance the salt and tang. Crumble blue cheese over salads and steaks, melt it into sauces and dips, or serve it on a board with nuts and dried fruit. The classic drink pairing is a sweet or fortified wine such as port or Sauternes.
Storing Blue Cheese
Wrap blue cheese in foil rather than breathable paper to slow the mold's spread, and keep it in the fridge. Bring it to room temperature before serving so its flavors open up. If unfamiliar mold of a different color appears on the cut surface, trim it away.
Frequently Asked Questions
Is the mold in blue cheese safe to eat?
Yes. The Penicillium molds used in blue cheese are food-safe and added intentionally as part of the cheesemaking process.
Why is blue cheese so salty?
Salt helps control the mold's growth, preserves the cheese, and balances its flavor. Saltiness varies a lot between types.
What's a good blue cheese for beginners?
Mild, creamy options like Gorgonzola Dolce or Cambozola are gentle starting points, especially paired with honey or fruit.