A method of producing an extract enriched with trigonelline (TRIG) and/or chlorogenic acids (CQA) from a TRIG and/or CQA containing organic plant material like Rubiacea plants, mate plants or the like, the method comprises the steps of: - providing an amount of the TRIG and/or CQA containing organic plant material in a container, - treating said amount of TRIG and/or CQA containing organic plant material with steam for a defined vaporisation period, - exposing the TRIG and/or CQA containing organic plant material steamed in the above step to hot water for least two times for extraction, and - removing said extract enriched with trigonelline (TRIG) and/or chlorogenic acid (CQA) from the residue.
