Cream over-whipped

The rescue

1. Stop whisking the moment you notice. Every extra second makes it worse.
2. Add a tablespoon or two of cold, unwhipped double cream.
3. Fold it in gently by hand with a spatula — do not use the mixer, and do not whisk hard.
4. It will smooth out and come back to soft peaks. Repeat with a little more cream if needed.
5. If it has already separated into yellow solids and thin liquid, it is butter and buttermilk. Do not try to save it as cream.
6. Keep the butter — drain it, rinse it in cold water, squeeze out the buttermilk and salt it. It is genuinely good.

The stages, in order

Frothy

Bubbly and still liquid. Barely started.

Soft peaks

Holds a peak that flops over. Right for folding into mousses and for spooning over puddings.

Firm peaks

The peak stands up. Right for piping and filling.

Stiff

Very firm, starting to look matt rather than glossy. Already slightly past ideal for most uses.

Grainy

Visibly rough, losing its sheen. Rescuable at this point.

Split

Yellow lumps in cloudy liquid. This is butter.

Whipping reliably

• Use double or whipping cream. Single cream has too little fat to whip at all, and this is the commonest reason cream "will not whip".
• Everything cold — the cream, the bowl and the whisk. Chill them if the kitchen is warm.
• Whip on a medium speed rather than full. It takes slightly longer and gives far more control, and the foam is more stable.
• Stop earlier than you think. Cream firms up as it stands, and it firms up again when it is folded or piped.
• For folding into anything, stop at soft peaks. It will thicken further during the folding.
• A little icing sugar stabilises it slightly; a spoonful of mascarpone or crème fraîche stabilises it considerably.

What is actually happening

Cream is fat droplets suspended in water. Whisking does two things at once: it beats in air, and it knocks the fat droplets against each other hard enough that their membranes rupture and they begin to clump.

Up to a point that clumping is exactly what you want, because the partly-joined fat forms a network around the air bubbles and holds them. That is whipped cream. Keep going and the fat continues to join up, the network becomes too rigid to hold air, and it collapses — and eventually the fat coalesces into a solid mass and squeezes the water out. That is butter.

So over-whipping is not a separate accident; it is the same process taken two minutes too far. Adding unwhipped cream works because it supplies fresh intact fat droplets and liquid, which re-suspend the clumps that had begun to join.

Common questions