Theo Nash
Distilling alcohol at home may be illegal and is definitely dangerous. Ethanol and methanol are highly flammable, and drinking the distillate may be harmful or even fatal. However, if you are aware of the risks and are looking to create your own still from a pressure cooker, you will need some basic copper plumbing and a few other materials. You will also need to put in a mash, which could be a simple sugar wash or something more refined like a grain wash, and heat it up. Since alcohol has a lower boiling point than water, it will start evaporating sooner. The steam from your pot will rise up through the column, where it will lose heat and start to take a partial fluid form again, known as reflux.
How to distill alcohol with a pressure cooker
| Characteristics | Values |
|---|---|
| Materials | Pressure cooker, copper tubing, plastic bucket, ice, wine, cork, Blu-Tac, yeast, sugar, water, induction plate, glass piece, pipe cutter, copper plumbing |
| Process | Place mash (sugar wash or grain wash) in the pressure cooker with yeast. Heat over a low flame. Have a receptacle to catch the alcohol vapour. Throw away the first distill. |
| Precautions | Do not use aluminium pressure cookers. Do not use rubber tubes. Ethanol and methanol are highly flammable. |
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What You'll Learn
Use a non-aluminium pressure cooker
Distilling alcohol may be illegal and is definitely dangerous, so proceed with caution.
If you're using a non-aluminium pressure cooker, you'll need to cut your copper pipes to the right length with a pipe cutter or a small metal saw. You'll also need a plastic bucket, a drill, a brewing cork, and Blu-Tac. Form a coil with the copper tube, leaving a long lead-in, and wrap it around a demi. Drill a hole in the bucket, and poke the lower end of your coil through this. The copper tube is connected to the pressure cooker with a brewing cork, and a bit of Blu-Tac seals the tube to the bucket. Fill the bucket with cold water and maybe some ice.
Place your mash in the pressure cooker. This could be a simple sugar wash or something more refined, like a grain wash. Heat up your mixture of alcohol and water over a very low heat. Make sure you have a receptacle below the end of the copper tubing to catch the alcohol vapour. As alcohol has a lower boiling point than water, the alcohol will start evaporating first. This creates a complicated mixture of gases in the pot. The steam from your pot rises up through the column, where it loses heat and starts to turn back into a liquid, along with the water—this is called reflux.
After each lot of still-beer in the pressure cooker has been distilled, you'll be left with about a gallon and a half to two gallons of alcohol, known as 'low wines'. It's important to throw away the first distill—it's highly toxic and can be dangerous to your health.
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Prepare a mash
Preparing a mash is the first step in distilling alcohol with a pressure cooker. The mash is the mixture that will eventually be separated into alcohol and water. You can use a simple sugar wash, which involves mixing sugar with water, or something more complex like a grain wash. The amount of sugar you use will determine the amount of alcohol produced; for example, 1 kilogram of sugar mixed with 4 litres of water will yield approximately 750 millilitres of 40% ABV alcohol. You can also add other ingredients like honey, yeast, and fruit to create different flavours.
It's important to note that the type of pressure cooker you use matters. Avoid using aluminium pressure cookers as alcohol can react with acidic washes and alcohol vapour. Instead, opt for a stainless steel or copper pressure cooker. Additionally, make sure your pressure cooker is large enough to accommodate the mash and has a tight-fitting lid to prevent alcohol vapours from escaping.
When preparing your mash, sanitation is critical. Ensure that all equipment, including the pressure cooker, is thoroughly cleaned and sanitised before use. This will help prevent the growth of unwanted bacteria that can ruin your mash. It's also important to use food-grade ingredients and avoid anything that is not meant for human consumption, as it can introduce harmful chemicals into your final product.
The cooking process for the mash varies depending on the recipe you are following. Some recipes require cooking the mash until all the liquid is evaporated, while others have specific temperature and time guidelines. It's important to follow a trusted recipe and maintain a low heat to avoid increasing pressure inside the cooker. Always refer to detailed recipes and instructions for the specific type of alcohol you are trying to distill.
Remember, distilling alcohol can be dangerous, and it is illegal in many places. Be sure to educate yourself on the legal and safety considerations before attempting to distill alcohol with a pressure cooker.
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Heat over a low flame
When heating over a low flame, it is important to remember that ethanol and methanol are highly flammable, so you must exercise caution. It is recommended to use an induction plate for heating as it is easier to control and can be placed outdoors. If you are using a propane stove, keep the heat low to avoid increasing pressure above 1 atm.
If you are using an old pressure cooker, be aware that some are made of aluminium, which conducts heat very well and can cause the cooler to lose its cooling potential. This can result in the re-flux effect not working properly, as the column at the top will get hot. To address this, you can place a glass piece inside the column to help with cooling.
When heating your mixture of alcohol and water, remember that alcohol has a lower boiling point than water, so it will start evaporating first. This creates a mixture of gases in the pot, which then rises as steam through the column. As the steam rises, it loses heat, and the water and alcohol start to condense back into a partial fluid state, known as reflux.
During this process, ensure that you have a receptacle below the end of the copper tubing to catch the alcohol vapour. Allow at least 1/2 cup of the first distill to accumulate and then discard it, as it is highly toxic and can be dangerous to your health.
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Collect distillate
Distilling alcohol may be illegal, and drinking distilled alcohol may be harmful or even fatal. If you choose to proceed, be aware that ethanol and methanol are highly flammable, and that the process can be dangerous.
Now, to collect the distillate, you will need a receptacle placed below the end of the copper tubing to catch the alcohol vapour. It is recommended to throw away at least half a cup of the first distill, as this can be toxic. After each batch of still-beer in the pressure cooker has been distilled, you will be left with about one and a half to two gallons of alcohol, known as 'low wines'.
If you are using an old pressure cooker, be aware that it may be made of aluminium, which does not work with induction. You can try heating it au bain-marie, but this may cause the water to boil over and result in a slow heating process. An alternative is to use an induction adapter or a cheap frying pan as an adapter. However, be cautious as alcohol can react with acidic washes and alcohol vapour.
Additionally, if your pressure cooker is made of aluminium, it will heat up quickly, which can interfere with the cooling process and the re-flux effect. To mitigate this, you can try inserting a glass piece within the column.
It is important to note that the amount of aluminium in the final distillate is reportedly minimal and challenging to measure. Nevertheless, always exercise caution and prioritize your safety when distilling alcohol.
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Dispose of the first distill
When distilling alcohol with a pressure cooker, it is imperative to dispose of the first distill. This initial batch of distillate is highly toxic and dangerous to consume. It contains harmful contaminants and has been linked to severe health issues, including organ damage, loss of sight, and even death.
To safely discard the first distill, collect at least half a cup of the distillate in a cup or receptacle. It is crucial to ensure that this initial batch does not come into contact with any food preparation areas or utensils to prevent accidental ingestion. Once collected, pour the first distill down the drain. This method of disposal ensures that it is safely removed from your immediate environment.
It is worth noting that the first distill has a distinct and unpleasant odour, which should serve as a warning sign. While you can dispose of it by throwing it away, some people choose to store it separately for alternative uses, such as a cleaning product. The strong odour can be indicative of the presence of methanol, which is highly toxic.
The process of disposing of the first distill is a critical step in ensuring the safety of your homemade alcohol. It is a precaution that must not be overlooked, as the consequences of consuming this initial batch can be life-threatening. Always exercise caution and prioritize safety throughout the distillation process.
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Frequently asked questions
No, it is not safe to distill alcohol with a pressure cooker. The pressure favours water over ethanol and it is dangerous.
You need a pressure cooker, copper tubing, a plastic bucket, a drill, a cork, Blu-Tac, a thermometer, and a receptacle to catch the alcohol vapour.
First, put in a mash, which could be a simple sugar wash or a grain wash. Then, heat up the mixture of alcohol and water. Since alcohol has a lower boiling point, it will start evaporating sooner. The steam rises through the column, where it loses heat and starts to take a partial fluid form again, called reflux.
Distilling alcohol can be dangerous as ethanol and methanol are highly flammable. Be sure to keep the heat low to prevent increasing pressure over 1 atm. Also, avoid using aluminium pots as alcohol can react with acidic washes and the alcohol vapour.
An alternative method is to use an air still and a 5-gallon fermenter or bucket with a lid, airlock, and grommet. This method is safer and allows you to collect low wines and perform a second distillation.
