Why Make Your Own Ink?

There is something quietly satisfying about dipping a pen into a small jar of ink you made yourself from a handful of blackberries picked on a September walk. Homemade inks are unpredictable, faintly fragrant, and utterly personal. They will not behave like the uniform, factory-made bottled ink you might buy for a fountain pen, and that is precisely the point. Natural inks give journal pages a subtle, earthy character — a faded plum, a dusty olive, a soft rust — that no synthetic colour quite matches. They also slow you down. When the ink is scarce, or when it flows unevenly, you write more deliberately, and that suits the reflective rhythm of nature journaling beautifully.

What You Will Need

You do not need much equipment, and most of it is already in your kitchen. Gather these before you start.

• A small non-reactive saucepan — stainless steel or enamel, never aluminium, which can react with the plant acids and discolour your ink.
• A wooden spoon you do not mind staining.
• A fine mesh sieve, a piece of muslin, or an old, clean cotton cloth for straining.
• Small glass jars with tight-fitting lids for storing.
• A binder. Gum arabic is the traditional choice and is widely available; a few drops of clear honey or a little glycerine will also work in a pinch.
• A few drops of essential oil or a small clove — optional, but it helps stop mould forming in the jar.
• A splash of white vinegar or a pinch of salt, which acts as a mild preservative and can deepen certain colours.

Gathering Your Colour

Almost any deeply coloured plant will surrender some pigment, but a few give reliably rich results. Blackberries, elderberries, sloes and damsons produce warm purples and reds. Hawthorn berries and rosehips lean toward orange and coral. Nettles give a soft green, walnut husks a deep brown, and red cabbage an astonishing blue that shifts toward purple as it dries. On the leaf side, try ivy, birch, or the dark foliage of beetroot tops.

Forage responsibly. Take only what is abundant, leave plenty for the birds and for next year's growth, and never pick from busy roadside verges where exhaust residue collects. A good rule is one part berries to two parts water by volume. For leaves, use roughly a double handful per 250ml of water. If you are working with berries, crush them lightly with the back of the spoon first; this releases more juice and shortens the simmering time.

The Basic Method

Simmer your gathered berries or leaves with a little water, then strain and mix with a binder. That is the whole craft in one sentence, but the details matter.

Place your plant material in the saucepan and add just enough water to cover it. Bring to a gentle simmer, then reduce the heat right down. You want a soft, lazy bubble, not a rolling boil, which can dull the colour. Let it cook for twenty to forty minutes, stirring now and then and pressing the fruit against the side of the pan to squeeze out the pigment. The liquid should reduce by roughly half and look noticeably darker.

Take the pan off the heat and let it cool completely. Straining hot liquid is a needless risk, and a cool mixture gives up more colour. Line your sieve with muslin and pour the contents through, then gather the cloth and squeeze firmly — this last squeeze often holds the richest colour of all. You should be left with a clear, deeply tinted liquid.

Now add your binder. For every 100ml of strained liquid, stir in about half a teaspoon of gum arabic, whisking until it dissolves fully. The binder thickens the ink slightly so it grips the paper rather than bleeding across it, and it helps the colour sit on the surface instead of soaking straight through. Add a few drops of vinegar or a pinch of salt, plus a clove or a drop of essential oil if you wish. Stir, decant into your jar, and label it with the date and the plant you used.

Tips for Better Results

Natural ink is a living thing, and it will change. Expect the colour to shift as it oxidises over the first day or two, and expect it to fade gradually on the page — a quality many journal keepers come to love. Keep your jars in a cool, dark cupboard, and make small batches rather than large ones so nothing sits around long enough to spoil.

Test your ink on a scrap of the paper you plan to use before committing it to a good notebook. Some papers are thirsty and will drink the colour into a pale wash; a smoother, slightly sized surface will hold it better. If your ink is too thin, simmer it down a little further. If it is too thick or clags on the nib, add a few drops of water. A dip pen with a broad nib suits these inks best, and an old brush works wonderfully for washes. Do not put homemade ink in a valuable fountain pen — the particles and acidity can clog the feed. And wear an apron. Berry ink on a favourite shirt is permanent in a way no shop-bought ink ever is.

Making It Your Own

Once you have mastered the basic method, experiment. Try blending two batches — blackberry with nettle for a moody brown-purple, or rosehip with a little beetroot for a warmer red. Add a pinch of iron from a rusted nail soaked in vinegar to darken a tannin-rich leaf ink into a deep, inky black. Record every batch in your journal alongside the weather, the date, and where you gathered, so that a page written in October ink carries the memory of the walk that made it. That is the real pleasure of this craft: your notebook becomes a small archive of the seasons, written in their own colours.