Coffee compacting processes and compacted coffee tablets for extraction by pressurised flow

A process for production of compacted coffee tablets (1) for preparing coffee-based beverages by means of a pressurized extraction flow, including espresso coffee type, the process comprising:

• providing a compacting machine that includes a compaction die presenting a plurality of individual collection openings operable with compaction punches;
• supplying individual quantities (Qi) of an edible substance presenting a Hausner index smaller than 1.30, to the individual collection openings of the compaction die;
• operating the compaction of individual quantities (Qi) by applying vertically reciprocal forces with a value between 5 kN and 50 kN thereupon by the compaction punches;
• discharging compacted coffee tablets that present a hardness between 4 N and 30 N and a compacted density between 0.15 g/ml and 1.0 g/ml.