, like this
sous vide stick, is used to evaporate ethanol in
plastic stills or
spiral stills. In some countries, moonshine
stills are illegal to sell, import, and own without permission. However, enthusiasts explain on internet forums how to obtain equipment and assemble it into a still. To cut costs, stainless steel vessels are often replaced with
plastic stills, vessels made from
polypropylene that can withstand relatively high heat. • A
column still, or a
spiral still, can achieve a vapor alcohol content of
95% ABV. • Moonshine is usually distilled to 40% ABV, and seldom above 66% based on 48 samples. For example, conventional
pot stills commonly produce 40% ABV, and top out between 60% and 80% ABV after multiple distillations. However, ethanol can be dried to
95% ABV by heating 3A molecular sieves such as 3A
zeolite. The preferred heat source for
plastic stills or
spiral stills is
sous vide sticks; these control temperature, time, and circulation, and are therefore preferred over
immersion heaters. Multiple units can be used to increase the wattage. Also,
sous vide sticks, commonly sold in 1200 W and generally temperature regulated up to (ethanol boils at ), evaporate the ethanol faster than an
immersion heater, commonly sold in 300 W.
Electrical injury may occur if immersion heaters are modified, such as if a thermostat is removed from an
aquarium heater (because doing so may break its
waterproofing), or if an immersion heater is disassembled from an
electric water boiler.
Evaporation stills Plastic still A plastic still is a device for
distillation specially adapted for separating
ethanol and
water. Plastic stills are common because they are cheap and easy to manufacture. The principle is that a smaller amount of liquid is placed in an open smaller vessel inside a larger one that is closed. A cheap 100 W
immersion heater is typically used as heat source, but a
thermal immersion circulator, like a
sous vide stick is ideal because it comes with a temperature controller. The liquid is kept heated at about and slowly evaporates the ethanol to 40% ABV that condense on the inner walls of the outer vessel. The condensation that accumulates in the bottom of the vessel can then be diverted directly down through a filter containing
activated carbon. The final product has approximately twice as much alcohol content as the starting liquid and can be distilled several times if stronger distillate is desired. The method is slow, and is not suitable for large-scale production.
Boiling stills Fractional distillation Fractional distillation is the
separation of a
mixture into its component parts, or
fractions.
Chemical compounds are separated by heating them to a
temperature at which one or more fractions of the mixture
vaporize. It uses
distillation to
fractionate. Generally the component parts have boiling points that differ by less than 25 °C (45 °F) from each other under a pressure of one
atmosphere.
Column still legend: *Both columns are preheated by steam. A column still, also called a continuous still, patent still or Coffey still, is a variety of
still consisting of two columns. A column still can achieve a vapor alcohol content of
95% ABV.
Spiral still A spiral still is a type of
column still with a simple slow air-cooled distillation apparatus, commonly used for bootlegging. Column and cooler consist of a copper tube wound in spiral form. The tube first goes up to act as a simple column, and then down to cool the product. Cookware usually consists of a plastic wine bucket. The heat source is typically a
thermal immersion circulator (commonly runs at 1200 W), like a
sous vide stick because it is hard to find 300 W
immersion heaters, and it is risky to disassemble the immersion heater from an
electric water boiler because it may cause
electrical injury. The spiral burner is popular because, despite its simple construction and low manufacturing cost, it can provide
95% ABV.
Pot still A pot still is a type of distillation apparatus or
still used to
distill flavored liquors such as
whisky or
cognac, but not
rectified spirit because they are poor at separating
congeners. Pot stills operate on a
batch distillation basis (as opposed to a
Coffey or column stills, which operate on a
continuous basis). Traditionally constructed from
copper, pot stills are made in a range of shapes and sizes depending on quantity and style of spirit. Geographic variations in still design exist, with certain kinds popular in parts of
Appalachia, a region known for moonshine distilling. Spirits distilled in pots commonly have 40% ABV, and top out between 60 and 80% after multiple distillations. == Safety ==