Disclosed is a process for production of a concentrated coffee product, comprising the steps of providing a coffee concentrate obtained from roast and ground coffee beans and adding spent coffee grounds having an average particles size of 0.1- 0 µm to the coffee concentrate. The concentrated coffee product findsuseful applications for spent coffee grounds, increasesthe yield of roast and ground coffee beans, makes it possible to design new properties, and/or improves thedigestive effect and/or mouth feel.