Abstract: A method for preparing beverages by extraction, employing high-pressure processing (HPP), for the bulk production of enriched beverages, ready for consumption and with an extended useful life. The method uses high hydrostatic pressures to perform a solid-liquid extraction and/or infusion (e.g. cold infusion) with an improved extraction rate and/or yield, and simultaneously inactivating spoilage and pathogenic micro-organisms to increase its safety and useful life. The method includes placing a mix (8) of solids and liquids in a bag (3) located within a vessel (4) and pressurising same to a pre-set pressure (up to 800 MPa) and maintaining said pressure (10) for a pre-set period of time. The method includes the subsequent depressurisation of the vessel (11) and the removal of the mix from the bag (12), filtering the same under ultra-clean conditions (13), thus obtaining a safe, particle-free beverage, enriched with the extracted compounds of interest.