Labneh: Eighteen Hours of Drain and the Salt Rate That Makes It Last
Labneh is yogurt with the water taken out, but the choice of yogurt and the point at which you salt it decide whether it becomes a firm ball or a puddle. This record fixes the culture, the drain time and the salt rate, plus the oil-keeping method that turns three days into three weeks.
Each segment is as wide as its share of the 1380 minutes in the vat; the set segment carries the set temperature, the cut segment carries the cut size.
Salt and press drawer
Press ladder
Eaten within days; the surface is the cheese.
Start from a firm, unsweetened set
Make the yogurt first: 1% thermophilic culture by volume, 43 C for five hours, then chill overnight. Do not start from a drinkable supermarket yogurt. It is stabilised, often set with modified starch, and the solids will not separate cleanly in the bag.
The overnight chill matters more than it looks. Warm yogurt drains fast and unevenly, and the outside of the bag sets before the middle has given up its water.
Salt before the drain, not after
Stir 0.9% fine salt into the cold yogurt before it goes into the bag. Salt draws water out of the casein and speeds the drain, and it also makes the finished labneh hold a shape. Salted after draining, it sits on the surface and the balls stay soft in the middle.
Hang the bag in the fridge for eighteen hours over a bowl. At room temperature, six hours is enough and the flavour becomes noticeably sharper.
Read the texture by weight, then decide
Two litres of firm yogurt weigh about 2.05 kg. At 1.4 kg you have a spreadable labneh; at 1.0 kg it rolls into balls that hold their shape on a plate. The remaining weight is whey, and it is clean, mildly acid and excellent in bread dough.
Do not press the bag. Gravity does this job; a weight forces fat through the cloth and the labneh turns greasy at the edges.
Three days plain, three weeks under oil
Plain, in a covered container, it keeps three to four days. Roll into 30 g balls, dry them on paper for two hours, then cover completely with olive oil and a few black peppercorns and it keeps three weeks at 5 C, or six months if you also dry-salt the balls at 4% for twelve hours first.
The oil must cover them entirely. Any ball poking above the surface grows a white surface yeast within a week, and that is the point at which the whole jar tastes of it.
Aging parameters
| Milk | Pasteurised cow milk 3.5% fat |
|---|---|
| Culture | Thermophilic 38–45 °C |
| Rennet | None (heat set) 0 IMCU/L |
| pH at drain | 4.3 target 6.1–6.5 |
| Target moisture | 68 % |
| Cave temperature | 5 °C |
| Cave humidity | 85 % |
| Aging days | 3 days |
| Rind treatment | No rind |
| Yield | 0.9 kg |
Pasteurised cow milk Fresh 3 days
Defect diagnosis
Flagged on this make: Bitterness
Bitterness seen this make
Signal — A harsh, lingering bitter note at the back of the palate, strongest in the first three weeks and often fading after six.
Cause — Too much rennet for the set time, or a microbial coagulant with high protease activity, or a scald that never got past 38 C.
Fix — Cut the dose by 20% next make and hold the scald 2 C higher for 10 minutes longer. Bitter peptides are water-soluble, so a 12% brine for 24 hours pulls some out.
Rancidity not seen
Signal — Soapy, paint-like smell that hits before the cheese reaches the mouth. Sharp and unpleasant rather than merely strong.
Cause — Free fatty acids released by lipase, usually from raw milk that sat warm too long, or from rennet paste, or from a knife or cloth that carried old milk residue.
Fix — Chill milk to 4 C within two hours of milking and pasteurise anything older than 24 hours. Retire the cloth: boil it, do not just rinse it.
Faulty eye formation not seen
Signal — Either no eyes where the style demands them, or a scatter of irregular slits and cracks instead of round, evenly spaced holes.
Cause — Coliform or yeast contamination from unsanitary brine, or a press that was too cold (below 18 C) so the propionic culture never woke up, or too much salt killing it outright.
Fix — Boil and re-salt the brine to 18-20% between batches, press at 20-22 C for the first six hours, and keep the salt under 1.6% for eye-forming styles.
Misread surface mould not seen
Signal — A grey-green or black fuzzy patch on a rind that was supposed to be white or orange, or blue speckling on a hard cheese.
Cause — Wild Penicillium and Cladosporium from a cave with moving air and standing humidity. Also from brushing a good rind with a damp, dirty brush.
Fix — Distinguish before you discard: white felt and orange smear are wanted, green fuzz on a hard rind is surface only and rubs off with 3% brine. Black patches that pit the paste mean the wheel is lost.
Four things to carry forward
- 1% thermophilic culture at 43 C for five hours, chill overnight
- Salt 0.9% before draining, never after
- Drain 18 h in the fridge; stop at 1.4 kg spreadable or 1.0 kg rollable
- Under oil it keeps three weeks; dry-salt first for six months