Accelerated aging of alcohol spirits
Alcoholic spirits may be artificially aged under highly pressurized carbon dioxide. The carbon dioxide may form carbonic acid, which may cause various esters to form in the presence of wood as well as to mellow the flavor when no wood is present. Wood may be pretreated with ozone, which may extract lignin which may further convert to vanillin during pressurized CO2 treatment, giving a vanilla note. After processing with pressurized CO2, a post-treatment of ozone may be given to the spirit, which may cause a mild oxidation and further mellowing of the spirit.
1. A method comprising:
receiving unprocessed alcohol spirits into a pressure vessel;
pressurizing said alcohol spirits in said pressure vessel with carbon dioxide to a predefined pressure;
maintaining at least said predefined pressure in said pressure vessel for at least a first predefined time, said first predefined time being at least 5 minutes;
receiving wood pieces in a wood containment vessel;
causing said contents of said pressure vessel to recirculate between said pressure vessel and said wood containment vessel;
introducing ozone to said wood containment vessel prior to said causing said contents of said pressure vessel to recirculate;
causing contents of said pressure vessel to come in contact with wood pieces while said maintaining at least said predefined pressure;
after said first predefined time, returning said pressure vessel to atmospheric pressure; and
removing processed alcohol spirits from said pressure vessel.
2. The method of claim 1 further comprising:
heating said pressure vessel to at least 80 F while said maintaining at least said predefined pressure.
3. The method of claim 2 further comprising cooling a top portion of said pressure vessel during said heating.
4. The method of claim 1 further comprising:
introducing ozone into said pressure vessel after said returning said pressure vessel to atmospheric pressure and before removing said processed spirits from said pressure vessel.
5. The method of claim 1 wherein said introducing ozone to said wood containment vessel is performed prior to said causing said contents of said pressure vessel to come in contact with said wood pieces.
6. A method comprising:
receiving wood pieces in a first pressure vessel;
introducing ozone to said wood pieces in said first pressure vessel to create processed wood pieces;
receiving unprocessed alcohol spirits in a second pressure vessel;
receiving said processed wood pieces in said second pressure vessel;
pressurizing said alcohol spirits in said second pressure vessel with carbon dioxide to a predefined pressure;
maintaining at least said predefined pressure in said second pressure vessel for at least a first predefined time;
causing said alcohol spirits in said second pressure vessel to come in contact with said processed wood pieces while said maintaining at least said predefined pressure;
after said first predefined time, returning said second pressure vessel to atmospheric pressure; and
removing processed alcohol spirits from said second pressure vessel.
7. The method of claim 6 further comprising:
heating said second pressure vessel to at least 80 F while said maintaining at least said preferred pressure.
8. The method of claim 6 further comprising:
introducing ozone into said second pressure vessel after said returning said second pressure vessel to atmospheric pressure and before removing said processed spirits from said second pressure vessel.