Why Elderflower Cordial Is Worth the Walk

From late May into mid-June, elder bushes along hedgerows, railway embankments and overgrown churchyards carry flat plates of creamy-white blossom that scent the whole lane. If you catch them at the right moment, that scent can go into a bottle and come back out in January.

Shop-bought cordial tends to taste thin and soapy by comparison — more sugar than flower. Homemade is greener, muskier and much more fragrant, and it takes an afternoon rather than a week. You need a dry morning, a basket, and a large pan.

Finding Elderflower and Telling It Apart

Elder (Sambucus nigra) is a shrubby tree of nitrogen-rich ground: hedge bottoms, scrubby waste ground, the edges of farmyards and car parks, and the sunny side of a railway line. Once you can recognise it you will start spotting it everywhere.

Look for flat-topped heads roughly 10–20cm across, each made of hundreds of tiny five-petalled florets no bigger than a pinhead. They sit on green stems that turn reddish-brown with age. The leaves are opposite and pinnate, with five to seven oval, serrated leaflets that smell faintly unpleasant when crushed — this is your best confirmation, because elderflower itself smells sweet. Older bark is corky and fissured.

Early heads are tight and greenish; at their peak they are wide, flat and dusted with pale yellow pollen, and that pollen is where most of the flavour lives. Once they droop and smell of cat, they are finished.

Lookalikes to leave alone: rowan and guelder rose also carry white flowers in flat heads. Rowan's are smaller and duster-like, on trees with ash-like leaves, often higher up in upland country. Guelder rose has a lace-cap structure — a ring of large showy florets around a centre of tiny fertile ones — and three-lobed leaves. And as a general rule with any white flower head you are unsure of, including cow parsley and the seriously toxic hemlock water dropwort, walk on.

Picking: Dry Mornings and a Light Hand

• Go on a dry morning once the dew has lifted but before the heat of the day. Wet heads dilute the flavour and go mouldy quickly; hot heads wilt before you get them home.
• Snip whole heads just below the fork that holds the florets, leaving the main stems intact. Take no more than a third from any one bush — those flowers become berries that feed blackbirds, warblers and dormice.
• Pick at waist height or above on roadside bushes, and avoid verges beside busy roads or land that may have been sprayed.
• Carry the heads in a basket or paper bag, not plastic, and don't pile them deep.
• Don't wash them. Shake each head out over the bag to dislodge the beetles, ants and small spiders that always come along for the ride.

The Cordial: A Reliable Recipe

This makes about 2 litres of cordial, enough for roughly ten litres of diluted drink.

• 30 large elderflower heads, freshly picked and shaken free of insects
• 1.5 litres water
• 1 kg granulated sugar
• 2 unwaxed lemons, thinly sliced
• 30g citric acid — from a pharmacy, home-brew shop or large supermarket

Bring the water to the boil in a large pan, add the sugar and stir until it dissolves completely. Take it off the heat and leave it to cool until it is just warm, no hotter than a bath. Pour into a large bowl or a clean bucket.

Add the lemon slices and citric acid, then the elderflower heads. Push them under the surface with a clean plate or a weighted saucer so nothing dries out and browns at the top. Cover with a cloth or a lid and leave somewhere cool for 24 to 48 hours, stirring once or twice.

Don't be tempted to leave it longer. Past two days the flavour turns flat and soapy, and in warm weather it can start to ferment.

Straining, Bottling and Keeping

Line a colander with a double layer of muslin and set it over a large jug. Ladle the mixture in and let it drain for an hour or so. Squeezing the pulp forces out fine particles and makes the cordial cloudy — purely cosmetic, but worth avoiding if you want a clear syrup. Strain again through fresh muslin for a really bright result.

Funnel into sterilised swing-top or screw-top bottles, seal and label with the date. In the fridge it will keep three to four weeks, or freeze it in ice-cube trays and bag the cubes for up to a year. The citric acid does much of the preserving, so if you halve it, plan to freeze rather than chill.

Drinking It, and a Few Ideas Beyond

Dilute roughly one part cordial to five parts cold or sparkling water, over plenty of ice with a slice of lemon. It also makes a lovely long drink with gin, or with soda and a sprig of mint.

• Drizzle undiluted over poached gooseberries, rhubarb or a plain sponge.
• Add a spoonful to a gin and tonic in place of some of the tonic.
• Stir into yoghurt with a handful of soft fruit.
• Freeze into lollies for hot afternoons.
• Turn a strong batch into sorbet with a squeeze of extra lemon.

If your cordial turns fizzy on its own after a few days, it has begun to ferment. It is harmless but won't keep, so drink it soon or freeze it. And if you find yourself with more blossom than the recipe needs, elderflower vinegar, elderflower gin and elderflower fritters are all worth a go — but start with the cordial. It is the one you will make every year.