Natural form

A whole marrow resting on a wooden surface, showing its full pale green form.

Establishes the marrow's defining characteristic: its large, elongated shape and pale green skin that distinguishes it from a young courgette.

Produce

Marrow (Courgette)

Large mature courgette with mild flesh; stuffed, baked, or stewed.

A marrow is a large, mature courgette (zucchini) with pale green skin and watery, mild flesh. Because of its size and subtle flavor it is usually stuffed and baked, stewed, or simmered into chutneys rather than eaten raw. It needs assertive seasoning and is often paired with herbs, tomatoes, and cheese to bring it to life.

Marrow is simply a courgette harvested at full maturity rather than picked young. The distinction is one of harvest timing and size, not variety — any courgette can be grown on to become a marrow. As the fruit matures, the skin thickens and develops a waxy coating, the flesh becomes denser and less watery, the seeds enlarge into a prominent central cavity, and the flavour deepens into something subtly sweeter and more pronounced. In British and Australian usage, 'marrow' denotes this mature specimen intended for baking and stuffing; in American kitchens the same mature fruits are typically called summer squash or large zucchini.

Because of its substantial flesh and lower moisture content, marrow behaves very differently from young courgette in the kitchen. It holds its shape when baked whole, slices cleanly for gratins, and tolerates longer cooking without collapsing into mush. The trade-off is that you must address the seed cavity before cooking — the seeds are large and tough, and the seedy core will water down any dish. Marrow is also far more forgiving of seasoning and strong flavours than its baby counterpart, which makes it a versatile vehicle for bold stuffings, rich sauces, and aromatic herbs.

Measured in: piece
Storage: Fridge

Types & varieties

Allgreen

Classic green-striped marrow; reliable and widely available

Long White Bush

White to pale green skin; mild flavour

Tiger Cross

Green with pale stripes; compact growing habit

Yellow Bush

Golden-yellow skin; slightly sweeter than green varieties

Round Eight Ball

Round marrow variety; ideal for stuffing

Pic-N-Pic F1

Can be harvested young as courgette or left to mature as marrow

Bone Marrow

Rich, fatty interior of beef leg bones. Roast canoe-cut bones until the marrow softens and spreads like butter on toast; also enriches stocks, sauces, and braises.

Common uses

Stuffed whole or halved and baked (the classic preparation)Sliced and layered in vegetable gratins and moussaka-style dishesStewed or braised with tomatoes, onions, and herbsSliced, salted, and fried as marrow chipsPuréed into soups, often combined with other vegetablesMade into marrow and ginger jamFilled with minced meat or vegetarian stuffing and roastedSliced into ribbons and briefly cooked as a low-carb pasta substitute

Tips & pitfalls

Always scoop out and discard the central seed cavity — the seeds are large and tough, and the seedy core releases excess water during cooking, diluting flavour and texture
Salt sliced marrow generously and leave it to drain for 20–30 minutes before cooking to draw out moisture; pat dry thoroughly before proceeding
If the skin is very thick and waxy, peel it; younger marrows with thinner skin can be left unpeeled
Do not overcook: marrow holds its shape better than young courgette, but becomes mushy if cooked too long
When baking whole or halved, score the cut surface deeply with a knife and rub with oil to prevent splitting under heat
Marrow freezes well after cooking and is particularly useful for winter stews; blanch cubed marrow for 3 minutes before freezing
The seedy core water content means stuffed marrow should be seasoned and allowed to rest after filling, before baking, to prevent a soggy base

Nutrition

No USDA FoodData Central match for Marrow (Courgette) yet. We surface a per-100 g profile once a generic whole-food entry is matched and verified.

In the shops

Matched grocery products

No matched grocery products for Marrow (Courgette) yet.

Good to know

Botanical name: Cucurbita pepo
Family: Cucurbitaceae (gourd family)
Origin: Domesticated in Mesoamerica; cultivated for thousands of years
Season: Late summer through autumn
Flavour: Mild and slightly sweet; sweeter and less watery than young courgette when cooked
Typical size: 20–40 cm when harvested as marrow; can grow much larger if left on the plant
Skin: Tougher than young courgette; often requires peeling or scoring
Flesh: Denser, dryer, and more substantial than young courgette
Seeds: Large and prominent; must be removed before cooking
Storage: 1–2 weeks at cool room temperature; up to 2 weeks in refrigerator
Nutrition: Low calorie; good source of vitamin C, potassium, and dietary fibre

Substitutes

Pattypan squash — Similar density and mild flavour; best for stuffing when harvested mature
Summer squash (straightneck or crookneck) — Comparable texture; may be slightly sweeter; substitute 1:1
Pumpkin flesh — Denser and sweeter; works in stews and purées; not ideal for stuffed preparations
Aubergine — Similar meaty texture and neutral flavour; suitable for baked and grilled dishes
Large unpeeled courgette — If harvested at maximum size, nearly indistinguishable; substitute 1:1