A Guide to Bulgarian Sirene: The Brined White Cheese That Anchors the National Table

Walk into any Bulgarian kitchen and you are likely to find a block of white cheese sitting in brine, ready to be crumbled over a salad, baked into a pastry or simply eaten with bread. Known as sirene (сирене), this brined cheese is the country's most iconic dairy product and a cornerstone of everyday meals.

What is sirene?

Sirene is a fresh, brined white cheese traditionally made from sheep's milk, cow's milk or a mixture of the two. It has a crumbly yet slightly springy texture and a salty, tangy flavour that becomes sharper with age. Unlike aged cheeses, sirene is not ripened for months; it is ready to eat within days or weeks, preserved in a saltwater brine that keeps it moist and flavourful.

Bulgarian sirene is often compared to Greek feta, but it tends to be saltier and firmer, and it is made using a specific technology that gives it a characteristic graininess. In Bulgaria, the name 'sirene' is protected by tradition, and many locals insist that true sirene must contain at least some sheep's milk for the best taste.

Types of sirene by milk

The flavour and texture of sirene vary depending on the milk used:

• Sheep's milk sirene is the most prized, with a rich, slightly sweet undertone and a creamy mouthfeel. It is often more expensive and considered ideal for eating on its own.
• Cow's milk sirene is milder, softer and more crumbly. It is the most common type found in shops and is excellent for cooking.
• Goat's milk sirene is less common but has a distinctive tang and a whiter colour. It is appreciated by those who enjoy a stronger flavour.
• Mixed milk sirene, usually cow and sheep, balances flavour and affordability, and is widely used in everyday cooking.

Some producers also make buffalo milk sirene, which is exceptionally creamy, though it is harder to find outside specific regions.

How sirene is made

The traditional method begins with fresh milk that is warmed and curdled using rennet. The curds are cut, drained and pressed into blocks, then cut into smaller pieces and placed in brine. The cheese rests in the brine for at least a few days to develop its salty exterior and firm texture. In rural areas, families still make sirene at home, often using milk from their own animals. The brine not only preserves the cheese but also draws out moisture, concentrating the flavour.

Buying and storing sirene

When buying sirene, look for a block that is intact, with no dry or discoloured edges. It should be stored in its brine in the refrigerator; if the brine is discarded, the cheese will dry out and become overly salty. If you buy sirene that comes without brine, you can make your own by dissolving about 60 grams of salt in one litre of water and covering the cheese completely. Change the brine every week or so to keep the cheese fresh. Sirene can last for months in brine, though its texture will gradually become firmer and saltier.

Everyday uses for sirene

Sirene is everywhere in Bulgarian cuisine. It is the main ingredient in shopska salad, where it is grated or crumbled over tomatoes, cucumbers, peppers and onions. It fills banitsa, the flaky pastry eaten for breakfast, and it is mixed into mish-mash, a scrambled egg and vegetable dish. Sirene is also baked on top of gyuvech, a slow-cooked meat and vegetable stew, or served simply with a slice of bread and a tomato as a light meal. Because of its saltiness, it is rarely eaten alone in large quantities; a little goes a long way.

For a truly local experience, try a piece of sirene with a spoonful of honey or a slice of watermelon in summer—the sweet and salty combination is a beloved Bulgarian treat.