Arq: The Thousand-Year Tradition of Distilled Herbal Waters

Long before "hydrosol" was a word, the distilled waters of herbs had a name, a pharmacy shelf, and a thousand-year clinical tradition. In Unani medicine, the Greco-Arabic system still practiced across South Asia and the Middle East, a herb simmered in water and distilled in a copper vessel is called an arq. Rose water is arq-e-gulab. Fennel water is arq-e-badiyan. Mint water is arq-e-podina. India's official registry of traditional medicines lists arqiyat, the distillates, as a formal dosage class to this day.

If you own a copper still, you own the instrument this entire tradition was built on. This is the story of what the old still-rooms made, and what their Western twins were.

TL;DR

• What an arq is: a single-herb distilled water, made in a copper still, taken as a traditional preparation.
• The Western mirror: the aqua waters of old pharmacy: aqua rosae, aqua foeniculi, aqua menthae.
• The modern name: what today's distillers call a hydrosol is, in method, an arq.
• Our line: we describe the tradition; we make no medical claims for any distillate.

The classical arq shelf

The names follow one pattern: arq means distillate, and the second word names the plant. The best-known of the classical preparations:

• Arq-e-Gulab, rose. The universal one, used in food, on skin, and in tradition as a gentle tonic.
• Arq-e-Badiyan, fennel seed. The digestive water of the tradition.
• Arq-e-Podina, mint. The stomach-settler.
• Arq-e-Kasni, chicory. Classically paired with the liver.
• Arq-e-Gaozaban, borage.
• Arq-e-Zeera, cumin, and Arq-e-Ajwain, carom seed.
• Arq-e-Mundi and Arq-e-Ushba, from field herbs of the subcontinent.
• Arq-e-Keora, pandanus, the kewra water that scents biryani to this day.

Each was made the way you make a hydrosol now: plant material soaked in water, simmered in a copper deg, the vapor condensed and bottled.

Europe ran the same pharmacy

Open a nineteenth-century Western dispensatory and you find the same shelf under Latin names. Aqua rosae, rose water. Aqua foeniculi, fennel water, which survived into living memory as gripe water for colicky babies. Aqua menthae piperitae, peppermint water, stocked by British chemists within living memory. Aqua cinnamomi, aqua anethi, aqua aurantii floris, orange flower water. Two traditions, one machine, one method. The copper still was the pharmacy's instrument before it was the perfumer's or the distiller's.

What this means for your still

Practically: every arq above that is food-safe is something you can distill today from our guides, and the method is unchanged. Start with rose water, the arq the whole tradition begins with. Follow with fennel seed, whose distilled water is the original aqua foeniculi, and mint from our peppermint guide. The kitchen uses are timeless; a spoonful of fennel water after a heavy meal is a habit half the old world still keeps.

And to be plain about the line we hold: the therapeutic claims of Unani medicine belong to its own practitioners and its own literature. We sell a still and describe a tradition. Nothing here is medical advice, and home distillates are not medicines.

Frequently asked questions

Is an arq just a hydrosol?

In method, yes: water distillation of a single herb. The difference is context. Hydrosol is aromatherapy and skincare vocabulary; arq is a pharmacy word from a tradition with its own rules, doses, and practitioners.

Why was everything distilled in copper?

Availability, workability, and the same practical chemistry distillers cite now: clean vapor and even heat. The deg of Kannauj and the alembic of Córdoba are regional accents of one design.

Can I drink the hydrosols I make?

Food-safe plants, clean equipment, and common sense: rose, fennel, mint, and orange blossom waters have been kitchen ingredients for a thousand years. Treat anything medicinal-sounding as a research topic, not a beverage.

A thousand-year-old shelf, one afternoon at a time

The 5 Litre still makes single bottles of any water on this page; the 5 Gallon stocks a pantry. The full repertoire lives at everything a copper still can make.