Ingredient

Carrot

A carrot has more sugar than almost any other common vegetable, which is why it is the one that most rewards dry heat. Boiled, it tastes of carrot; roasted, it tastes of caramel and carrot, and the difference is entirely about whether the water got out.

Why roasting works so well

Carrots are firm because of pectin holding their cell walls together, and sweet because of stored sugars. Heat does two things: it breaks down the pectin so the carrot softens, and — once the surface is dry enough to get above the boiling point of water — it lets those sugars brown.

Boiling can only ever do the first. The carrot softens, some of the sugar leaches into the water, and what you get is a softer version of a raw carrot. Roasting does both, which is why the same vegetable can be dull one way and one of the best things on the plate the other.

Steaming sits between them: it softens without leaching, so a steamed carrot tastes more of itself than a boiled one, but it still cannot brown.

Getting roast carrots right

• Cut them large. Small pieces dry out and go leathery before they caramelise. Halved or quartered lengthways is ideal.
• Cut on a long diagonal if you want more surface for the same weight — more surface is more browning.
• Hot oven, around 200°C, and a tin with room around each piece.
• Enough fat to coat, and salt at the start rather than the end.
• Honey, maple or a splash of vinegar go on for the last ten minutes, not at the beginning, or the sugar burns long before the carrot is done.
• Cumin, coriander seed, thyme and harissa all belong here. So does yoghurt afterwards.

The cut, and what it is for

Cut size decides cooking time, and cut shape decides how much of the carrot the fork meets at once — which genuinely changes how sweet it tastes.

Whole or halved lengthways

Roasting. Maximum caramelised surface, minimum drying out.

Thick diagonal slices

Braises and stews, where they need to survive an hour.

Batons

Glazing, and anything served as a distinct side.

Fine dice (brunoise)

A soffritto or mirepoix base, where the carrot should disappear and sweeten the whole pot.

Grated or ribboned

Raw — salads, slaws, and cakes. Grated carrot in a cake collapses to almost nothing and contributes moisture and sweetness.

Buying and keeping

• Firm, with no soft ends. Bendy means dehydrated, which is a texture problem rather than a safety one.
• Buy them with the tops off, or remove the tops when you get home — the leaves keep pulling moisture out of the root.
• In the fridge, in a bag, away from apples and bananas, whose ethylene makes carrots taste bitter over time.
• The white bloom on peeled carrots is dehydration, not mould. A soak in cold water brings them back.
• Bendy carrots are still perfectly good for stock, soup or anything roasted long — do not throw them away.

Getting flavour out of a cheap vegetable

• Roast them whole or in large pieces. Small dice dries out; a whole carrot roasted slowly concentrates and caramelises.
• Do not peel them unless they are old or muddy. A scrub is usually enough, and the skin has flavour.
• Cut them on the diagonal for more surface area, which means more browning.
• They are one of the sweetest common vegetables, so they need salt and acid to balance — lemon, vinegar, yoghurt, cumin, harissa.
• The tops are edible and make a good pesto or salsa verde. Most people throw them away.
• In a soffritto, dice them small and give them time. They supply the background sweetness in most braises and ragùs.

Common questions