Top tuber: Skye Gyngell cooks with Jerusalem artichoke

Whoever named Jerusalem artichokes was taking the rest of us for a ride – but you don't have to be in on the gag to enjoy their nutty sweetness, says Skye Gyngell
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Nutty, sticky and sweet in flavour, Jerusalem artichokes grow readily in cold climates, which means they are good almost all year round. Right now, they seem a blessing, as new produce does not come into its own quite as soon as we'd like to imagine, and it is mid-April before we really begin to see a change in the veg available to us.

Despite their name, they are neither from Jerusalem nor related to other types of artichoke, but rather hail from North America and are related to the sunflower. But they produce edible tubers – and that is what is of most interest to us.

Mashed, roasted or made into soup,the consistency of Jerusalem artichokes seems somehow lighter than other root vegetables and they work well with fish and meat alike.

Skye Gyngell is head chef at Petersham Nurseries, Richmond, Surrey, tel: 020 8605 3627,

Chicken livers with roasted artichokes and balsamic vinegar

Serves 6

400g/13oz artichokes
Sea salt and freshly ground black pepper
A splash of extra-virgin olive oil
600g/1¼lb very fresh chicken livers – look for those that are pale in colour, as their flavour is gentler
A generous knob of unsalted butter
1 clove garlic, peeled and finely chopped
1 tsp chopped rosemary leaves
1 cup of full-bodied red wine
1 tbsp aged balsamic vinegar
6 slices of grilled bread

Scrub the artichokes well under running water. Cut into quarters and place in a saucepan of cold water. Add a good pinch of salt and place over a medium heat. Bring the water to the boil and cook for 5 minutes. Remove from the heat and drain in a colander.

Heat the oven to 200C/400F/Gas6. Toss the artichokes in a little olive oil and roast in the oven until soft, sticky and golden. Remove and set aside.

Prepare the chicken livers by removing the attached membrane. Place a pan on the stove over a high flame. Once the pan is hot, add the butter and allow it to foam. Add the chicken livers, garlic and rosemary, cook for a minute, then add the wine. Allow to bubble and reduce to almost nothing. Place the artichokes in the pan to warm through, then finish with the balsamic and a final knob of butter.

Taste and season – it is best with a good grinding of black pepper. Spoon on to warm plates and serve with the grilled bread if so desired.

Salad of artichokes, radicchio, rocket and Parmesan

Jerusalem artichokes sliced as finely as possible and served raw are nutty, crunchy and clean. The important thing is to make sure that they are very fresh, as their flesh softens as they grow older and they are then not particularly palatable. Look for small artichokes that are firm for their size.

Serves 6

A small bunch of rocket
1 head of radicchio or trevisse
The zest of 1 unwaxed lemon
The juice of half a lemon
Sea salt and freshly ground black pepper
3 firm, fresh artichokes, scrubbed clean and finely sliced
100g/3 oz aged Parmesan, sliced as thinly as possible
1 tbsp extra-virgin olive oil
6 tsp crème fraîche or ricotta cheese

Wash the rocket and radicchio in a cool-water bath. Pat dry gently using a clean dishcloth. Place in a bowl and add half the lemon zest and juice. Season with a little salt and pepper and toss together gently. Arrange thoughtfully on a plate.

In the same bowl that you dressed the leaves, dress the artichokes and cheese in the same way with the remaining lemon zest and juice. Pile on top of the salad leaves and finish with the crème fraîche, or do as I sometimes do and spoon the cream on top of the leaves before adding the artichokes.

Mashed Jerusalem artichokes with scallops

This is a surprisingly good combination. Both Jerusalem artichokes and scallops are gently sweet, with flavours that balance. The artichokes can be prepared beforehand and simply heated up when you are almost ready to eat, while the scallops need to be cooked just moments before eating.

Serves 6

300g/10oz small, ripe tomatoes
Sea salt and freshly ground black pepper
A splash of extra-virgin olive oil
1kg/2lb firm, unblemished artichokes
3 tbsp extra-virgin olive oil
1 tbsp unsalted butter
1 small bunch of marjoram, leaves only
1 tsp olive oil
18 very fresh plump scallops, muscle removed but roe still attached
A generous squeeze of lemon juice

Preheat the oven to 200C/400F/Gas6. Place the tomatoes in a roasting tray and season with salt and pepper. Drizzle over a little olive oil and place on the middle shelf of the oven. Cook until soft and slightly caramelised. Remove and set aside.

Scrub the artichokes thoroughly but don't peel. Place in a saucepan and cover with cold water. Add a generous pinch of salt and place over a medium heat. Cook for 20 minutes or until soft when pierced with a fork. Drain and return to the pan. Add the olive oil and butter, a good grinding of black pepper and a little salt. Mash thoroughly with a fork. Stir in the cooked tomatoes and marjoram and set aside while you cook the scallops.

Place a non-stick frying pan over a high heat. Once hot, add the olive oil. Season the scallops and add to the pan. Cook for a minute on both sides then finish with a squeeze of lemon juice.

Divide the mash between six warm plates and lay the scallops alongside. Serve while the scallops are piping-hot.