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I count myself amongst them. Jerusalem artichokes are delicious and special and still remarkably seasonal. This is a crop that belongs to the late autumn and winter, a root vegetable with the gorgeous natural sweetness that slow growth in the darkness of moist earth imparts. Knobbly they may be, but the texture of the cooked tuber is smooth and gently crisp, defying comparison with others.
There is, as the name suggests, a passing resemblance in flavour to globe artichokes but there is no way you could confuse the two. The Jerusalem artichoke is very much its own man. With one half of the name explained, you might then wonder why a native American vegetable has acquired a Levantine moniker. The answer is simple: corruption. Not fraudulent illegal corruption, but verbal. The Jerusalem artichoke is closely related to the sunflower and, like the sunflower, its open-faced flower follows the sun from morning to evening. The Italian for sunflower is ‘girasole’, translating literally as turning towards the sun. ‘Jerusalem’ is merely a mispronunciation of this, lending an added exoticism to a vegetable that has travelled far.
Not so exotic is its propensity to flatulence. Theories abound as to how to minimise the after-effects, but to be frank I’ve never been that bothered. Except once, when I was breastfeeding my first child. A generous helping of Jerusalem artichokes gave rise to a distinctly sleepless night, and a very cranky mother and baby. Lactating mothers apart, I would suggest that you just accept that Jerusalem artichokes will induce wind to some degree, and ignore it. The taste is too good to let a minor inconvenience put you off.
As if to make up for their inherent windiness, Jerusalem artichokes are often grown as windbreaks along the edge of a vegetable garden. They are easy and undemanding, ideal for the not-so-green-fingered gardener, reproducing silently and prolifically underground as the tall stems stretch upwards to protect less hardy plants.
Practicalities
BUYING
There are two key things to bear in mind when buying Jerusalem artichokes. The first is that they should be fairly firm with just the slightest give (i.e. not as hard as a potato, but firmer than a tomato). The second is that it is worth spending a few extra seconds sorting through the box to select the least knobbly tubers. Charming and funny though the more knobbly ones look, the fact is that you are going to have to peel the wretched things at some point. Smaller knobbles will just have to be sheared off and discarded; larger ones may ultimately go the same way if you can’t be bothered to peel each and every one of them. In other words, you pay for a lot of waste.
COOKING
The next issue is when to peel them. My mum always used to peel them after boiling – she thought it easier – but I veer the other way, preferring to peel them before they go into any pan. The first method is probably more economical in that it minimises waste, as the skin just pulls away, but it does mean that reheating will be necessary. Peeling them first means that they can be whisked straight from the pan to the table, which suits me better. Be aware, however, that peeled raw Jerusalem artichokes discolour very quickly. Within minutes they take on a rusty colour as they oxidise. To prevent this (especially if there is to be a time lapse between peeling and cooking) drop the prepared Jerusalem artichokes into a bowl of acidulated water (i.e. water with the juice of
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lemon, or a tablespoon or two of vinegar, swished in).
Jerusalem artichokes can be cooked in most ways. Plainly boiled or steamed, tossed with a squeeze or two of lemon and a knob of butter, and served hot is the most obvious. But equally as good (if not better) are roast artichokes, bundled into the oven still swaddled in their skins (no choice here), with a small slick of olive oil and a sprinkling of salt. Once cooked it is up to each consumer to decide whether to eat the skins or not. I’ve often included Jerusalem artichokes in stir-fries (they make a rather good substitute for water chestnuts), where if you get the timings right they retain a slight crunch, alongside the characteristic sweet nuttiness. They go fantastically well with chicken in a creamy stew, even better encased in puff pastry to transform the stew into a pie.
PARTNERS
Some people like them raw in salads. I don’t. I do, on the other hand, like them lightly cooked and cooled in a tarragon or chervil-flecked dressing, to stand as a salad on their own, or to add to other ingredients. Nut oils – hazelnut or walnut – bring out the natural nutty taste of the vegetable. Prawns (or lobster if you fancy something really smart) and Jerusalem artichokes on a bed of watercress or rocket make a most appetising starter or main course in the middle of the cooler months. Grill or bake a rasher or two of pancetta or dry-cured bacon until crisp, perch it on top and you’re heading towards perfection.
SEE ALSO GLOBE ARTICHOKES (PAGE 139).
Jerusalem artichoke broth
I have fond memories of my mother making Palestine soup way, way back, in the cubbyhole of a kitchen in our holiday home in France. As a name for Jerusalem artichoke soup it now strikes one as a distinctly tasteless joke, but to be fair it pre-dates the creation of Israel in 1948. When I came to look up the soup in her Vegetable Book (Michael Joseph, 1978) it turns out to be a puréed cream of a soup, and not at all the clear broth studded with knobbles of sweet, semi-crisp artichoke that I thought I recalled. Memory plays strange tricks…
This is how I now prefer to make the soup, the intensity of slow-cooked vegetable sweetness shot through with a balancing measure of white wine vinegar. All in all, it is a deceptively simple creation, obviously at its best when simmered in a home-made stock, but still more than palatable when a decent instant vegetable bouillon is substituted.
Serves 6
1 large onion, halved and sliced
675 g (11/2 lb) Jerusalem artichokes, peeled, halved and sliced
2 tablespoons extra virgin olive oil
4 good sprigs thyme
1 bay leaf
1 litre (13/4 pints) chicken or vegetable stock
2 tablespoons white wine vinegar
2 tablespoons roughly chopped parsley salt and pepper
To serve (optional)
6 thick slices baguette
150g (5oz) single Gloucester, mature Cheddar or Gruyèe cheese, coarsely grated
Put the onion, artichokes and oil into a pan and add the thyme and bay leaf, tied together with string. Cover and sweat over a low heat for some 15 minutes, stirring occasionally. Now add the stock, vinegar, salt and pepper (be generous with the pepper, please) and bring up to the boil. Simmer for 10 minutes, then taste and adjust seasoning. Discard the thyme and bay leaf and serve, sprinkled with parsley.
If using the bread and cheese, toast the baguette lightly on both sides under the grill. Then, just before serving, top with grated cheese and slide back under the grill to melt. Float a slice of cheese on toast in each bowl of soup as you serve.
Chicken and Jerusalem artichoke pie
Jerusalem artichokes impart an enormous depth of flavour to any sauce or stock they are simmered in, which is what makes this otherwise fairly classic chicken pie so appetising. For a dish like this, I use a mixture of breast and leg meat, cut into large chunks. The darker flesh stays moister throughout the double cooking.
Serves 8
500g (1 lb 2 oz) puff pastry
plain flour
1 egg, lightly beaten
Filling
1 onion, chopped
2 cloves garlic, chopped
30g (1oz) butter
500g (1 lb 2 oz) Jerusalem artichokes, peeled and cut roughly into 1.5cm (5/8 in) thick chunks
finely grated zest of 1 orange
150ml (5floz) dry white wine
21/2 tablespoons plain flour
300ml (10floz) chicken stock
700g (1 lb 9oz) boned chicken, cut into 3–4cm (11/2 in) chunks
150ml (5floz) double cream
salt and pepper
Begin with the filling. Fry the onion and garlic gently in the butter until tender without browning. Now add the Jerusalem artichokes, orange zest and white wine and boil down until the wine has virtually disappeared. Sprinkle over the flour and stir for a few seconds so that it is evenly distributed. Gradually stir in the stock to make a sauce. Season with salt and pepper, then stir in the chicken. Now cover and leave to simmer away quietly for some 10 minutes or so, stirring occasionally. Then uncover and simmer for 5 minutes, until the sauce has thickened. Stir in the cream and cook for a final 3 minutes. Taste and adjust the seasoning. Spoon into a 1–1.5 litre (1
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-2
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pint) pie dish and leave to cool.
Roll out the pastry thinly on a floured board. Cut out a couple of long strips about 1cm (
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in) wide. Brush the edge of the pie dish with the beaten egg. Lay the strips of pastry on the edge, curving to fit and cutting so that they go all the way around but don’t overlap. Brush them with egg, then lay the remaining pastry over the top. Trim off excess, and press the pastry down all around the edge to seal. Use the pastry trimmings to make leaves or flowers or whatever takes your fancy, and glue them in place with the egg wash. Make a hole in the centre so that steam can escape. Chill the pie in the fridge for half an hour.
Preheat the oven to 220°C/425°F/Gas 7. Brush with egg wash and place in the oven. After 10–15 minutes, when the pastry is golden brown, reduce the heat to 190°C/375°F/Gas 5. Continue baking for a further 20–25 minutes. Serve hot.
Jicama (#ulink_771c9974-8961-5067-90cf-517f4f75cb11)
Sometimes the best place to hide something is in a place so obvious that no-one but those in the know think to look there. Jicama is just such a cleverly hidden secret, for sale openly in our towns and cities, if only you know where to look. No point asking for it in supermarkets, in farm shops, in greengrocers, in farmers’ markets. No point in asking for it by this name, either, even if you have the finest South American accent – ‘hee-kah-ma’. You must, instead, replace it with a far duller name: yam bean. This is odd because it is neither yam, nor bean, and bears no resemblance to either.
It looks something like a chunky turnip, with a matt mid-brown skin. In other words, it has a thoroughly undistinguished appearance, which makes hiding it all the easier. The place to look, in this innocent game of vegetable hide and seek, is in the vegetable racks of a Chinese supermarket, where you are virtually guaranteed to discover a plentiful supply of jicama/yam bean.
Apart from the fun of the game, there is a point to tracking down a jicama or two. The point is that they are so good to eat, and so different to most other vegetables. Under the worthy brown skin, the flesh is a clean pure white. It tastes, when raw, something like green peas, and has the consistency of a large radish, juicy and crunchy and refreshing.
Practicalities
BUYING
If a choice is to be had, opt for medium-sized jicama – larger ones will have begun to develop a mealier texture, which though not unpleasant is less enticing. They should be firm all over, with a matt brown skin. The skin should be unbroken – cuts or bruises suggest that rot may have set in.
In the vegetable drawer of the fridge, a jicama will last for up to a week, even when cut (cover the cut edge with clingfilm to prevent drying out). To use, you need do no more than cut out a chunk, pare off the fibrous skin, and slice or cube the white flesh.
COOKING
Raw jicama is a brilliant addition to a summer salad, but my favourite
way to eat it is Mexican style. In other words, dry-fry equal quantities of coriander and cumin seeds, grind to a powder and add cayenne to taste. Arrange the sliced jicama on a plate, squeeze over lime juice and sprinkle with the spice mixture and a little salt, before finishing with a few coriander leaves. That’s it. When they are at their ripest, I add slices of orange-fleshed melon to the jicama, which makes it even more luscious. Batons of raw jicama are an excellent addition to a selection of crudités served with hummus or other creamy dips.
Jicama responds well to stir-frying, too, again on its own with just garlic and ginger to spice it up, or with other vegetables. It needs 3–4 minutes in the wok to soften it partially, without losing the sweet crunchiness entirely.
Kumara (#ulink_fb577b0e-95cb-53ff-97ab-e5b09c39d7f4)
It isn’t too clever to sell two different vegetables by the same name, even when they look virtually identical. However, for many years that is just what has been happening. When I was a child, the sweet potatoes that my mother brought home as an occasional treat were always white fleshed and we just adored them: roasted in their jackets until tender, then eaten slathered with salted butter.
More recently sweet potatoes have turned orange and soggy. In truth it is not a miraculous transformation, just that one (in my opinion slightly inferior) variety has replaced t’other. For a few transitionary years, you had no idea which you were buying, unless you scratched away the skin to inspect the underlying colour. Anyone with the slightest bit of sense would have seen that these vegetables should be called by different names, and at last that seems to have happened, with the happy reintroduction of the white-fleshed sweet potato, a.k.a. the kumara, to this country.
The word ‘kumara’ comes from the Maori name for the white-fleshed Ipomoea batatas. They are, as you might well infer from this, extremely popular in New Zealand, and indeed in many places around the Pacific. Their country of origin is thought to be Mexico, where roast kumara are sold by street vendors, to be anointed with condensed milk and eaten as a pudding rather than a vegetable. Try it some time and see how good it is.
Kumara is also the sweet potato used widely in the Caribbean for making pies and dumplings. The orange-fleshed sweet potato is not a good substitute here, as the flesh is too watery and lacks the necessary starch to bind ingredients together.
So the point that I’m trying to make is this: kumara are downright gorgeous and you really should try them if you haven’t already. They are still not exactly commonplace but at least one of the larger supermarket chains is importing them regularly, and you may well find them in Caribbean food stores. Go search and you will be well rewarded.
Practicalities
BUYING
If you have the choice, pick out kumara that are on the larger side, with firm, smooth, dark pink-brown skin. Bruises and soft patches, as always, warn you to steer clear. Cut ends will be a dirty greyish colour, but don’t let this bother you – it’s just a spot of oxidisation, not a sign of something disturbing.
Kumara like to be kept in a cool, airy, dark spot, which is not the fridge. Over-chilled kumara develop a tougher centre, at least that’s what producers say. In practice, I’ve found that a day or two in the fridge doesn’t make any noticeable difference to the texture once cooked, which is handy if you don’t happen to have a cool, airy, dark spot to hand. Better the fridge, I find, than a warm kitchen where they are likely to start sprouting.
Longer term storage (they should keep nicely for up to a fortnight) and you really ought to treat them as they prefer – try wrapping them individually in a couple of sheets of newspaper to exclude light and absorb any humidity in the air.
COOKING
In terms of preparation, remarkably little is required. Give them a rinse, trim off discoloured ends and voilà, one kumara ready for the pot.
Or the oven. Which is exactly where you should start if you have never eaten kumara before. Just don’t stall there, as many people do. Yes, baked kumara are delicious, but that’s first base. You bake them just as if they were ordinary potatoes, in other words, prick the skin and then put them straight into the oven at somewhere around 180–200°C/350–400°F/Gas 4–6. Size will dictate how long they take to cook, but think in the region of 45–60 minutes. Split them open and serve with salted butter, or flaked Parmesan or Cheddar, or a great big dollop of Greek-style yoghurt. Remember that if you are eating them with the main course, you will need to partner them with something salty – I find that they are rather good with bacon, or even with tapenade. Excellent, too, with sausages.
Americans and New Zealanders like to surmount their baked kumara with other sweet things like pineapple, grated apple or dates (hmmm), or drizzle orange juice over them, which makes far more sense to me.
So, once you’ve done the oven experience, it’s time to move on. Kumara can be cooked in most of the ways that suit potatoes, i.e. sautéed, chipped, roast, mashed or boiled (a bit dull, frankly). Additionally, kumara can even be eaten raw, or transformed into pudding. I’ve tried it raw, grated into a salad. It’s okay, but not something to write home about. Pudding, on the other hand, is a natural end for the chestnutty kumara. Think that’s odd? Just try making a kumara fool (see recipes) and then tell me that it’s not pretty impressive.
PARTNERS
In recent days, I’ve sautéed cubes of kumara with diced spicy chorizo, which was very successful, and then taken more sautéed kumara and tossed it with rocket and feta and a vigorous lime juice, chilli and sunflower oil dressing to serve as a first course. Mashed kumara are good on their own, seasoned fully to balance the sweetness, or speckled with finely chopped spring onion or coriander. I rather fancy a smoked haddock fish cake held together with cooked kumara (slightly more smoked haddock than kumara, I think), though I haven’t tried it yet.
Also good, and I say this from experience, is a kumara cake – just substitute grated kumara for the carrot in the recipe on page 28. Fantastic.
SEE ALSO SWEET POTATOES (PAGE 91).
Smoky Parmesan roasted kumara cubes
Just damn gorgeous, these are. They’re wolfed down by one and all whenever I make them. There is something utterly irresistible about the combination of sweet kumara with a salty, crisp cheesy crust and a hint of hot smoke from the Spanish pimentón. They probably should go with something (a real burger, perhaps, or roast pheasant) but you might just make them as a snack when the right moment comes.
Serves 6
600g (1 lb 5oz) kumara
30g (1 oz) Parmesan, freshly grated
1 heaped teaspoon Spanish smoked paprika (pimentón)
3 tablespoons olive oil
salt
Preheat the oven to 200°C/400°F/Gas 6. Cut the kumara into 2 cm (scant 1 in) cubes. Blanch in boiling salted water for 4 minutes, then drain thoroughly. Toss with the Parmesan, paprika, salt and oil.