A system (1 ) for making beverages comprises a capsule (2) containing a powdered food substance which can be extracted to make a beverage, and a capsule holder (9) comprising an infeed opening (11 ) through which the capsule (2) can be inserted, delimited by an annular edge (12) at the top of which there is a projecting annular element (19) and/or respectively an annular seat (20). The capsule (2) comprises a body (3) comprising a lower wall (5), a lateral wall (6) and a perimetric edge (7) on which there is an annular groove (21 ) on whose surface there is a bottom zone (23) and, laterally positioned on opposite sides of the bottom zone, two inner lateral faces (24,25), and/or respectively there is an annular tooth (22) on whose surface there is a tip portion (29) and, laterally positioned on opposite sides of the tip portion, two outer lateral faces (30, 31 ). The capsule holder (9) and the capsule (2) can adopt a sealed configuration where the projecting annular element (19), inserted in the annular groove (21 ), is in sealed contact with at least one of the inner lateral faces (24, 25), and/or respectively the annular seat (20) receives inside it the annular tooth (22) and is in sealed contact with at least one of the outer lateral faces (30, 31 ).
