Brief description

An alembic is an alchemical still consisting of two vessels connected by a tube, used for distilling chemicals, medicines, perfumes, and food products. It is the grandfather of modern distillation apparatus.

It allows you to perform distillation efficiently by channeling vapor from a heated pot to a cooling vessel.

Use / Function

Its primary practical purpose is controlled distillation:

• Production of Spirits: Brandy, whiskey, etc.
• Essential Oils: Extracting scents and medicinal compounds.
• Alchemy/Chemistry: Purifying acids and other chemicals.

Operating principle

It directs rising vapor into a downward sloping tube for collection.

1. Cucurbit (Pot): Contains the liquid to be distilled; heated from below.
2. Anbik (Head/Helm): Covers the pot. It catches the rising vapor, which cools slightly on the head’s walls and channels into the spout.
3. Solen (Tube/Beak): Transports the vapor/liquid to the receiver.
4. Receiver: Collects the distillate.

How to create it

Minimum functional version (Improvised)

1. Pot: Any fire-safe pot.
2. Lid: An inverted cone or bowl placed on top.
3. Catch: A smaller bowl floating inside the pot or suspended to catch drips from the inverted lid (if cooling is applied to top of lid).
4. External: Ideally, a tube leads out from the lid to a cooling coil.

Classic Copper Alembic

1. Forming: Hammer copper sheets into a pot shape and a bulbous head with a swan-neck spout.
2. Joining: Rivet and solder (lead-free!) the seams.
3. Condenser: Connect the spout to a worm (coil) submerged in a barrel of cold water.

Materials needed

• Essential materials:
  • Copper: Traditional and best. It removes sulfur tastes from alcohol and conducts heat well.
  • Clay/Ceramics: Historical alternative, harder to seal and heat control is slower.
  • Glass: Good for laboratory and seeing the process, but fragile.
• Tools:
  • Hammer/Anvil: For shaping metal.
  • Kiln: For firing clay.

Variants and improvements

• Retort: A single glass vessel with a long downward neck (simpler, for small batches).
• Pot Still: The modern large-scale version of the alembic.
• Reflux Still: Adds a column to the alembic for higher purity in one run.

Limits and risks

• Sealing: Leaks mean lost product and danger of fire/explosion (alcohol vapor is explosive).
• Corrosion: Acidic washes can corrode copper; it needs cleaning.
• Pressure: Ensure the outlet is never blocked.