Actually very easy

Lor (whey cheese)

The beliefLor is assumed to be a cheese made from milk like any other.

The truthLor is made from what another cheese leaves behind. Heat the whey you drained to 90 °C and the last of its protein gathers.

1 hour

How to make it

What you need

2 litres whey (left from fresh cheese or labneh)
200 ml whole milk
1 tablespoon of vinegar, if needed
A pinch of salt
A double layer of muslin

How the engine read this list (4 lines)

—	Whey	no record
206 g	Whole milk	milk
15 g	Vinegar, if needed optional	vinegar
0 g	Salt	salt

An empty weight means that line could not be turned into grams — either the amount is open ("to taste") or the ingredient has no record here. Neither enters the sum as zero; they do not enter it at all.

Put the whey and milk in a wide pan and heat them over a medium flame without stirring.
Around 85 °C fine white specks should appear on the surface. Take it up to 90 °C and do not boil: boiling breaks the specks apart.
If no specks form, add the vinegar and stir once, gently. Hold it at that temperature for five minutes.
Turn off the heat and leave it fifteen minutes: the specks join into a thicker layer on top.
Lift the layer off with a slotted spoon into double muslin and drain it 20–30 minutes. Salt it, box it and chill it.

Why it works

When cheese is made, casein goes into the curd but the whey proteins — lactoglobulin and lactalbumin — stay in the liquid. They clump with heat, not acid: below 80 °C they stay dissolved, at 85–90 °C they unfold, bind to each other and rise to the surface like fine white snow. Italian ricotta is the same thing; the name means “cooked again”. The yield is small, because most of the milk’s protein is already in the first cheese, and smaller still from the whey of an acid-set cheese. The known way to raise it is to add about 10% fresh milk, so that its casein joins the curd. No more acid is needed if the whey is already below pH 5: heat alone does it. If it is higher, a tablespoon of vinegar starts the gathering.

The rough sum

206 grams going in

126 kcal in total

100% of the mass has figures behind it. This is the sum of what GOES IN rather than of what comes out. Wherever something evaporates, drains or ferments the two differ: a kilo of milk is 150 g of cheese.

Diets it qualifies for

Gluten-free Vegetarian

Storage & shelf life

How long it keeps

Fridge, in a closed box: 3 days
Freezer: 1 month: it weeps when thawed, so use it in cooking
Room temperature: No more than 2 hours

Lor is among the shortest-lived cheeses: unsalted or barely salted, moist, and with a pH close to neutral. Each of those helps bacteria. Plan to use it the day you make it or the day after; if it is going into börek, gözleme or a dessert, three days is plenty.

When to bin it A sour-bitter smell, a pool of yellow liquid or a sticky surface: throw it out.

History

Where it comes from

Lor was the second product of every Anatolian house that made cheese: the water left from brined white cheese, kaşar or tulum was boiled again in the cauldron and the lor lifted off. It became the base of börek and gözleme in the Aegean, of lor pide on the Black Sea, and of desserts in the Balkans. Not wasting is its whole identity: milk was dear, animals were few and every gram of protein counted. Ricotta’s history in Italy starts from the same reasoning, in shepherds’ huts.

The knack

Do not let the whey wait: make the lor within 2–3 hours of draining it, or it sours and foams at room temperature.
Drain it an hour for a dry, crumbly lor; fifteen minutes for a soft, creamy one.

Milk and culture