A February tomato and an August tomato are not really the same vegetable. The first is pale, firm and faintly apologetic; it needs sugar and a long spell in a pan. The second is heavy with juice, splits if you look at it sideways, and wants nothing more than salt, oil and bread. Cooking with the British calendar is mostly about keeping that difference in mind.

The seasons here are generous but not tidy. They overlap, run late and occasionally fail altogether. A wet June flattens the strawberries; a mild winter brings purple sprouting broccoli to market weeks early. The aim isn't to follow a strict timetable, but to know roughly what is worth buying now — and what to do when it arrives all at once.

How the British Year Actually Works

Three kinds of thing sit on a market stall at any given moment, and it helps to know which is which.

• Genuinely seasonal and brief: asparagus, wild garlic, forced rhubarb, soft fruit, samphire, game.
• Stored through the winter: roots, onions, maincrop potatoes, apples, squash.
• Grown under cover or flown in all year: tomatoes, salad leaves, berries out of season, most citrus.

None of that is a moral judgement about what you are allowed to eat. It is simply a guide to what will taste of something and what will need help. The leanest weeks, when the stored roots are finished and the new crops have not arrived, are known in farming as the hungry gap — roughly March into May, depending on the weather.

Winter: Roots, Brassicas and Forced Rhubarb

From January to March the British larder is built on what keeps. Parsnips, swede, celeriac, carrots and leeks; kale, savoy cabbage and sprouts still standing in the field; maincrop potatoes and stored onions. This is the cooking that made names for itself — Lancashire hotpot under a lid of sliced potato, Welsh cawl, a proper broth from a roasted carcass, bubble and squeak made from Sunday's leftovers.

Late winter brings two rewards. Purple sprouting broccoli starts appearing in February, and Yorkshire forced rhubarb — grown in darkened sheds around Wakefield — arrives from January into early spring. It is sharp and almost floral, nothing like the thick green stems from a garden. Roast it with orange zest, or stew it briefly and serve with custard. Game is still on the menu too, though the seasons wind down through January, so a butcher who knows where the birds came from is worth the trip.

Spring: Short Seasons and Sharp Flavours

Then, quite suddenly, the gap closes. Radishes, spring greens, the first outdoor salad leaves and wild garlic carpeting damp woodland from March to May. Pick the leaves before the white flowers open, when the flavour is fresh rather than harsh, and blitz them with toasted nuts, oil and a little hard cheese for a pesto that will keep a week in the fridge.

Asparagus is the season's headline act: British spears from late April until the traditional cut-off of 21 June. Eat them plainly while they last — steamed or griddled, butter, lemon, perhaps a poached egg on top. After that comes elderflower in late May and June for cordial and fools, then strawberries, peas and broad beans. New season lamb arrives in spring and wants little more than mint, salt and a very hot pan.

Summer: The Case for Doing Very Little

By July the British kitchen has more than it can reasonably use. Tomatoes, courgettes, runner beans, broad beans, cucumbers, new potatoes, cherries, raspberries, gooseberries and blackcurrants. Samphire from the marshes, mackerel off the coast, crab in the south west.

The best summer cooking is barely cooking. Salt sliced tomatoes and leave them ten minutes; keep them out of the fridge. Runner beans need nothing but butter and pepper. Courgettes are good sliced thick, oiled and griddled until they char. A summer pudding is bread, berries and sugar, and nothing else. Grilled mackerel with gooseberry sauce sounds odd and isn't.

This is also the moment to think ahead. Freeze soft fruit in a single layer on a tray before bagging it, make jam in the week the fruit is cheapest, and bottle elderflower cordial while the blossom is still creamy.

Autumn: Apples, Mushrooms and the Oven Again

September turns the kitchen back towards heat. Apples and pears come in — Bramleys for cooking, Coxes and russets for eating — alongside blackberries, damsons, cobnuts and the first squashes. Beetroot, cavolo nero and maincrop potatoes follow. Game returns to the block: grouse from the Twelfth of August, pheasant from October.

Mushrooms are the treat for anyone who knows their ground. If you don't, buy from a supplier who does rather than guessing — misidentification is a genuine risk, not a bit of foraging fun. Cook them hard in a dry pan first, add butter only once they have stopped squeaking, and pile them on toast.

Autumn is preserving weather as much as cooking weather. Sloes, traditionally picked after the first frosts, make gin that will be ready by Christmas; damsons make jam, more gin, and a crumble with far more backbone than most.

The Year at a Glance

• January: forced rhubarb, parsnips, leeks, kale, game.
• February: purple sprouting broccoli, swede, celeriac, forced rhubarb.
• March: wild garlic, spring greens, the last of the roots.
• April: asparagus begins, radishes, salad leaves, new season lamb.
• May: asparagus, elderflower, wild garlic in flower, early strawberries.
• June: strawberries, peas, broad beans, elderflower, asparagus ends.
• July: tomatoes, courgettes, cherries, samphire, mackerel.
• August: runner beans, raspberries, sweetcorn, crab, plums.
• September: apples, blackberries, damsons, cobnuts, grouse.
• October: squash, mushrooms, pheasant, sloes, maincrop potatoes.
• November: cavolo nero, beetroot, pears, venison, stored apples.
• December: sprouts, kale, celeriac, forced rhubarb on the way.

Cooking With the Calendar Without Being Ruled by It

Two habits are enough. First, shop where you can ask. A market stall, farm shop or good greengrocer will tell you what came in this morning and what is on its last legs — information a supermarket shelf rarely gives you. Second, buy the glut. When runner beans or plums are cheap and everywhere, that is the week for chutney and the freezer, not next month.

Then stay flexible. British seasons shift by weeks according to the weather, and a cold spring delays everything, so if the asparagus isn't in yet, wait rather than pay a premium for something disappointing. Learn two or three dishes per season well enough to cook without a recipe — a crumble, a roast, a soup — and let the market decide which one you're making.

Photo: Emrehan Çolak / Pexels