How to Cook with Nettles Without Getting Stung

Why Nettles Deserve a Place in Your Kitchen

For a few weeks every spring, the most useful green in Britain is also the one everybody avoids. Stinging nettles push up tender new tops from March onwards, long before the garden has anything else to offer, and they are free for the taking. Pick them young, before they flower — usually by late May in the south, early June further north — and you have a vegetable that behaves a lot like spinach, only with more character and considerably more backbone.

Once nettles come into flower, the leaves develop gritty crystals that make them unpleasant to eat, so timing matters. Young nettle tops are rich in iron, calcium and vitamins A and C, and they have a savoury, faintly cucumber-ish flavour that works beautifully with potatoes, cream, eggs and cheese. They also make one of the most satisfying preserves in the store cupboard: a vivid green pesto that tastes like spring itself.

Picking Nettles Without the Ouch

The sting comes from tiny hollow hairs that snap off on contact and release formic acid and histamine. Both are destroyed by heat, which is the whole secret of cooking with nettles — but you still have to get them home first.

• Wear rubber washing-up gloves, or a pair of thick garden gloves. Thin cotton ones are useless.
• Take only the top two to four sets of leaves, pinching the stem just below them. These are the tenderest and least gritty.
• Avoid roadsides, sprayed verges, and favourite dog-walking routes. Pick from hedgerows, field edges and quiet corners of the garden instead.
• Carry a roomy bag or basket and don't pack them down — squashed nettles bruise and wilt quickly.
• Pick in the morning after the dew has dried, and use them the same day if you can.

Never uproot the plants. Nettles regrow fast from the crown, and a patch picked lightly will keep giving you tips for weeks.

The Blanch That Kills the Sting

This is the step that turns an intimidating weed into dinner, and it takes about ninety seconds.

Rinse your nettles in a colander under cold water, picking out grass and any hitchhiking insects. Bring a large pan of well-salted water to a rolling boil. Drop the nettles in — they collapse almost immediately, which makes them easy to submerge. Cook for 60 to 90 seconds, no longer, or you lose both colour and bite.

Drain, then plunge straight into a bowl of iced water to set the colour. When they're cool enough to handle, lift them out in handfuls and squeeze hard in a clean tea towel until you have firm, dark green balls with very little water left in them. That squeezed nettle pulp is your ingredient. It keeps in the fridge for three days, or freezes beautifully for six months.

Cooked this way, nettles taste like spinach crossed with cucumber, with a slightly iron finish. If you blanch and squeeze a big batch at once, you'll find you cook with them far more often.

Three Recipes to Start With

Nettle and potato soup. Soften a chopped onion in butter, add two diced floury potatoes and a litre of vegetable or chicken stock, and simmer until the potatoes collapse. Stir in 200g of squeezed blanched nettles, cook for two minutes more, then blend until smooth. Finish with cream, a grating of nutmeg and plenty of black pepper.

Nettle gnocchi. Mash 500g of boiled floury potatoes with 250g of finely chopped blanched nettles, one egg yolk, 100g plain flour, salt and nutmeg. Bring together lightly, roll into ropes, cut into pillows, then poach in salted water until they float. Toss in browned butter with a little sage.

Nettle and feta tart. Blind-bake a shortcrust case, then fill with chopped blanched nettles, sliced spring onions and 200g crumbled feta. Pour over three eggs beaten with 150ml double cream and bake at 180°C fan for 25 to 30 minutes, until just set.

Preserving the Spring Glut

Nettles arrive all at once, so preserving is part of the pleasure.

• Freezing: blanch, squeeze, pack into small portions and freeze. Drop them straight into soups and stews from frozen.
• Nettle pesto: blitz 100g blanched nettles with 50g toasted hazelnuts, 50g grated Parmesan, a small garlic clove and 150ml rapeseed oil. Keeps a fortnight in the fridge, or freeze in ice-cube trays.
• Nettle salt: dry the leaves thoroughly in a low oven, then blitz with flaky sea salt. Excellent on roast potatoes.
• Nettle tea: pour boiling water over a few dried leaves and steep for five minutes. Light, grassy and faintly earthy.

A Few Final Tips

Treat nettles as a green rather than a bulk ingredient — a big panful reduces to a fist-sized ball, so weigh after blanching, not before. Add them late in cooking to keep the colour bright. And if you're nervous the first time, blanch a small handful, taste it, and let the flavour convince you. The sting is only ever a problem before the pan.