| 摘要 |
Dry tea is extracted with water at a temperature not above 110 DEG C. to provide a first extract, comminuting a quantity of the at least partially extracted tea and adding water thereto to form a pumpable slurry, heating the slurry to above 180 DEG C. to form a second extract, and combining the extracts. The combined extracts may be dried, for example by spray drying. Prior to mixing, the insoluble matter may be removed from the second extract, which is then rapidly cooled and concentrated. Before or after concentration aromas may be stripped from the second extract and discarded. Similarly, the first extract may be concentrated and subjected to aroma stripping, the stripped aromas being added to the combined extracts. Prior to extraction, steam may be passed through the dry tea to yield an aromatic distillate which is combined with the combined extracts. The extracts may be solubilized in known manner, for example by treating with a sulphite, or by cooling to precipitate tannins, which are then oxidized and returned to the extracts. |
