Method for producing an extract from cannabis plant matter

A process for extracting Delta 9-tetrahydrocannabinol from cannabis, the method consisting essentially of:

• a) shredding a predetermined quantity of cannabis which contains delta 9-Tetrahydrocannabinolic acid A into cannabis of about one inch in length;
• b) heating the cannabis at a temperature in a range of 225° F. to 245° F., wherein the cannabis undergoes a decarboxylation process, wherein a decarboxylated cannabis is created that contains a predetermined amount of Delta 9-tetrahydrocannabinol;
• c) combining the decarboxylated cannabis with a quantity of water to create an aqueous decarboxylated cannabis;
• d) pressurizing the aqueous decarboxylated cannabis within a substantially sealed heated pressurized container, wherein the pressure ranges from 10 PSI to 15 PSI and the temperature ranges from 310° F. to 360° F., for a predetermined time, wherein the Delta 9-tetrahydrocannabinol is released from the aqueous decarboxylated cannabis and is chemically bonded to the water, and an aqueous Delta 9-tetrahydrocannabinol is formed;
• e) sifting the aqueous Delta 9-tetrahydrocannabinol from the aqueous decarboxylated cannabis;
• and
• f) cooling the aqueous Delta 9-tetrahydrocannabinol at a temperature in the range of 20° F. to 40° F.