Chicken skin not crisp

Two things have to happen, in order

Chicken skin is collagen, fat and a great deal of water. Water must leave first: while any remains at the surface, the skin sits at boiling point and cannot brown or crisp.

Then the fat under the skin has to render. As it melts out, the skin thins, flattens against the meat and browns. Skin that is still sitting on a layer of soft fat will never be crisp however brown it looks.

This is why gentle heat for longer often beats fierce heat for less time — the fat needs time to render, and fierce heat sets the outside over unrendered fat.

Fixing it, by cut

1. Everything starts the same way: pat the skin completely dry, salt it, and leave it uncovered in the fridge for a few hours or overnight. Air-drying does more than any other single step.
2. Whole roast bird: start hot for twenty minutes to set the skin, then drop the temperature. Do not baste — every basting wets the skin you are trying to dry. Lift the bird on a rack or vegetables so air reaches underneath.
3. Thighs, skin-on: start skin side down in a cold or barely warm pan and bring the heat up slowly. The fat renders gradually and the skin flattens. Eight to twelve minutes without moving it.
4. Breast, skin-on: same cold-pan start, weighted with a smaller pan on top so the whole surface stays in contact.
5. Wings and drumsticks: a very hot oven on a rack, turned once. A light dusting of baking powder in the salt rub genuinely helps — it raises the surface pH and speeds browning.
6. Any of them: finish under a hot grill for a minute or two if the skin is rendered but pale.
7. Never cover it while it rests. Foil traps steam and softens crisp skin within minutes.

What ruins it late

The skin can be perfect coming out of the oven and soft by the time it reaches the table.

• Covering with foil to rest. The commonest late failure. Rest it uncovered, somewhere warm.
• Resting on a plate rather than a rack, so the underside sits in its own steam.
• Pouring sauce or gravy over it. Serve it alongside.
• Carving too early, releasing steam under the skin.
• Stacking pieces, which steams the contact faces.
• A crowded roasting tin, where the bird steams instead of roasting.

What does and does not help

Air-drying uncovered in the fridge

The most effective single step there is. Overnight if possible.

Salt on the skin

Draws moisture out and seasons. Apply well ahead, then blot.

A little baking powder in the rub

Raises surface pH and speeds browning. A small amount only — too much tastes soapy.

Basting

Actively counter-productive for crisp skin, whatever the tradition says.

Oil on the skin

Optional. The skin has plenty of its own fat; oil mainly helps conduct heat evenly.

Safety

How thoroughly meat, poultry and fish should be cooked, and how they should be stored, chilled and reheated, are food-safety questions rather than culinary ones. FoodHQ publishes no temperature, time or storage window for them — follow current Food Standards Agency guidance.

Common questions