How to Make Basil Water and Basil Essential Oil at Home

Here's the honest version first: basil is a low-yield plant for essential oil. Fresh basil gives just 0.1 to 0.7 percent of its weight as oil, so a home batch produces a fragrant film, not a bottle. Distill basil anyway. The hydrosol, basil water, is the actual prize: a bright, peppery-sweet water that belongs in a cook's spray bottle and works as a skin toner too.

You steam-distill it like any leafy herb: basil over water in a sealed still, collect the condensate, stop before you dilute it. Details below, including the one mistake that ruins basil runs.

TL;DR

• Quick answer: steam-distill 400g of fresh basil for about 500ml of basil hydrosol.
• Oil expectations: honest answer, a film. Basil is 0.1 to 0.7% oil by fresh weight.
• The prize: basil water for cooking, spritzing salads and tomatoes, and skin care.
• Best still size: 5 Litre for a garden row, 5 Gallon if you grow serious quantities.

The mistake that ruins basil runs

Heat. Basil's sweet top notes are fragile, and a hard rolling boil cooks them into something vegetal, closer to stewed greens than pesto. Keep the still at the gentlest simmer that still produces a steady drip. Slow is the whole technique with basil.

Harvest matters too. Cut just as flower buds form, in the morning, and distill the same day. Basil wilts and browns fast, and browned basil distills like it looks.

What you'll need

• 400g fresh basil, leaves and flower buds
• 2 litres of distilled or filtered water
• Ice for the condenser, a glass collection bottle
• A copper still, see the hydrosol distiller collection

Step by step

1. Rinse the basil only if it needs it, and shake it fully dry. Surface water dilutes nothing but adds run time.
2. Load loosely above 2 litres of water. Stems are fine; they carry oil glands too.
3. Bring to the gentlest simmer that produces steam. Patience beats temperature.
4. Collect around 500ml, then stop. Past 1:1 by plant weight you're bottling plain water.
5. Chill, then bottle in glass. Refrigerated, basil hydrosol keeps its brightness for about a year.

What basil water is for

Cooks get it immediately: a spray of basil water on sliced tomatoes, into a gin and tonic, over fresh mozzarella, or into a sorbet base carries basil aroma with no leaves and no bruising. On skin, basil hydrosol reads fresh and faintly spicy, and some people prefer it to mint as a summer face mist. It also earns a place in a linen spray blended with lavender water.

When buyers ask us for a first culinary water, we point them to basil before anything else. Nothing else this easy impresses dinner guests as much.

Frequently asked questions

Which basil variety distills best?

Sweet Genovese basil gives the classic aroma. Thai basil brings anise notes that make a striking, licorice-edged water. Holy basil, tulsi, distills into a peppery, clove-like hydrosol with its own tradition behind it. All three run the same way.

Can I get real basil essential oil at home?

Only at scale. At 0.1 to 0.7% yield you'd need many kilograms of leaf for a usable bottle of oil. Commercial basil oil exists because farms distill by the field. Run the numbers in our yield calculator.

Fresh or dried?

Fresh, always, for basil. Drying loses most of what makes it worth distilling.

Grow it, cut it, run it

A garden row of basil suits the 5 Litre still. Growers with a real patch should look at the 5 Gallon. And if you're deciding what to plant next spring, our guide to the best plants to grow for distillation ranks them by payoff, or see everything a copper still can make.