Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Beverage or beverage concentrate
Patent
1997-06-30
1998-05-19
Weier, Anthony J.
Food or edible material: processes, compositions, and products
Products per se, or processes of preparing or treating...
Beverage or beverage concentrate
426433, A23F 524
Patent
active
057532974
ABSTRACT:
The present invention relates to a method for preparing a beverage such as espresso coffee, which consists in feeding pressurized hot water through a coffee powder tablet; blocking, downstream of the tablet, the extracted liquid that has passed through the tablet; producing a removable plug by the use of the extracted liquid; causing an increase in pressure downstream of the tablet to increase the hot water pressurization inside the tablet; and reaching a removal pressure adapted to remove the removable plug, with subsequent dispensing of the extracted liquid at a dispensing pressure that is lower than the removal pressure to cause a decompression of the hot water inside the tablet.
REFERENCES:
patent: 2601067 (1952-06-01), Spencer
patent: 3288049 (1966-11-01), Schmidt et al.
patent: 4633771 (1987-01-01), Anderl
patent: 5134925 (1992-08-01), Bunn et al.
J. Lough Limited
Weier Anthony J.
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