Fermentation & Preservation
Yogurt Fermentation / Labneh
Also: labneh, labne, leben, strained yogurt, yogurt cheese, Greek yogurt (strained variant), kefir cheese
The process of straining live-culture yogurt through cloth to remove whey, concentrating it into a thick, spreadable cheese called labneh.
/LAB-neh (Arabic: لبنة)/Arabic, from laban (لبن), meaning milk or cultured milk; the technique is documented in Levantine, Persian, and Anatolian traditions for at least two millennia, predating industrial dairy refrigeration as a preservation strategy.
Definition
Yogurt fermentation begins when live bacterial cultures — primarily Lactobacillus bulgaricus and Streptococcus thermophilus — convert lactose in milk into lactic acid, dropping the pH and causing proteins to coagulate into a gel. Labneh takes this one step further: the fermented yogurt is suspended in cheesecloth or muslin and gravity-drained over hours to days, expelling the thin, sour whey (al-mā' al-laban) and leaving behind a progressively denser, tangier paste. A brief 4-to-6-hour drain produces a thick dip approximating Greek-style yogurt; 24 hours yields a firm, spreadable cream-cheese texture; 48–72 hours or more creates a firm ball that can be rolled in herbs, olive oil, or za'atar and aged at room temperature for weeks. The straining process is purely mechanical separation — no heat, pressing, or rennet — distinguishing labneh from pressed cheeses. Salt (typically 1–2% by weight) added before straining accelerates whey expulsion, enhances flavor, and provides an antimicrobial buffer. The resulting product retains all the live cultures of the source yogurt, along with concentrated milk solids, fat, and casein proteins. Whey yield ranges from roughly 40–60% of the original yogurt weight, depending on starting fat content and drain time. Full-fat whole-milk yogurt produces a richer, silkier labneh than low-fat versions. In the Levant, labneh is among the most common household preparations, eaten fresh with olive oil and flatbread, formed into balls and preserved in oil for months, or used as a cooking ingredient in savory mains and sweets.
In use
“She drained a liter of whole-milk yogurt for 36 hours to make labneh firm enough to roll into balls, then packed them into a jar with olive oil, dried chili, and thyme.”
See also
- TechniqueLacto-Fermentation
- IngredientYogurt
- ConceptAcid Balance
Related terms
References
- 1.On Food and Cooking — Harold McGee
- 2.Jerusalem — Yotam Ottolenghi & Sami Tamimi
- 3.Zaitoun: Recipes from the Palestinian Kitchen — Yasmin Khan
- 4.The Oxford Companion to Food — Alan Davidson
Confidence: high
Notes
Strain vs. Press
Labneh is drained purely by gravity through cloth — no pressing weight is applied, which distinguishes it from paneer, queso fresco, and other pressed fresh cheeses. The soft, slightly gelatinous texture of labneh comes from an intact protein network disrupted only by acid, not heat or rennet.
Whey Uses
The drained whey is itself valuable: mildly sour, rich in B vitamins and whey proteins, it can be used to hydrate bread dough, replace buttermilk in batters, or serve as a starter liquid for vegetable lacto-ferments.
Preservation Window
Freshly drained labneh keeps refrigerated for about one week. Balls packed in olive oil (submerged, airtight) at cool room temperature or in the refrigerator last 3–4 weeks; the oil itself absorbs flavor and is prized for dipping.