My grandfather made stock every Sunday. He never measured anything, never wrote down a recipe, and he would have laughed at a stock cube. But one thing he always did — which I didn't understand for years — was start with cold water. Not warm. Cold.
I asked him once why.
"Because you want the chicken to give slowly," he said. "Hot water slams the door shut."
He was, it turns out, entirely right.
Why cold water makes clear stock
When you lower a raw carcass into cold water and bring it up slowly, the proteins unfold gently. The grey foam that rises — coagulated blood proteins and impurities — appears gradually and can be skimmed away cleanly before it breaks apart and clouds the liquid.
Start with boiling water and the proteins seize instantly. The foam erupts faster than you can skim it, shatters into fine particles, and disperses through the stock. It will still taste good. It will not be clear.
This is why restaurant stocks are so transparent: the kitchen starts cold and heats slowly.
The method
- Put the carcass (or chicken wings) in a large pot. Cover with cold water — roughly 3 litres for a single carcass.
- Bring to a bare simmer over 20–30 minutes. Don't rush this part.
- Skim as the first foam appears. Use a wide, flat spoon. Skim every few minutes for the first 15 minutes of cooking.
- Add aromatics only once the foam settles. Halved onion, a rib of celery, a carrot, a bay leaf, a few peppercorns. Adding them earlier makes skimming harder.
- Hold at 85–90°C — not boiling. A rolling boil emulsifies the fat into the liquid and ruins the clarity. You want the surface nearly still, with slow, lazy bubbles.
- Simmer 2–3 hours. Long, low heat pulls collagen from the bones without agitation.
- Strain through a fine sieve by gravity alone. Do not press the solids. Pressing forces particles through.
What you get
The stock comes out amber-gold and trembling. At the end you'll notice it has no salt — none goes in during cooking. Salt concentrates as the liquid reduces, so you season only when you know the final use.
My grandfather's stock went into everything: risottos, braises, the steaming liquid for cabbage rolls. A jar of it in the fridge felt like money in the bank.
Wings work nearly as well as a whole carcass, if that's what you have. They carry enough collagen to give you a stock that sets to a loose jelly overnight in the cold.
The clock is the only thing you cannot shortcut. Everything else is just patience and a ladle.
