1. A beverage preparation system comprising a capsule (2) containing at least one powdered food product that can be removed by passing pressurized water through it to prepare a beverage, said capsule (2) comprising a substantially bowl-shaped body (3 ) with a central axis (4), said housing (3) comprising a lower wall (5), a side wall (6) extending from said lower wall (5), and at the opposite end of the side wall (6) relative to said lower wall (5), perimeter the edge (7) protruding outward from the side wall (6), said capsule (2) also having a lid (8) connected to said perimeter edge (7) to close the upper part of the housing (3)； capsule holder (9) inside which a recess (10) is formed to accommodate the capsule (2), said capsule holder (9) comprising a loading opening (11) through which the capsule (2) can be inserted into the depression (10), said loading opening (11) ) is limited around its perimeter by the annular edge (12) of the capsule holder (9), on the upper part of which there is a protruding ring-shaped element (19) and / or respectively an annular groove (20), injection means (14) secured in the capsule holder (9) for introducing pressurized water into the capsule (2) through the bottom wall (5 )； collection means (15) for collecting the beverage discharged through the lid (8) of the capsule (2)； moreover, on the perimeter edge (7), on the opposite side with respect to the side on which the lid (8) of the capsule (2) is connected, there is an annular groove (21) on the surface There are three otorrhea portion annularly disposed about1. Система для приготовления напитков, содержащая капсулу (2), содержащую по меньшей мере один порошкообразный пищевой продукт, который может быть извлечен посредством пропускания через него воды под давлением для приготовления напитка, причем упомянутая капсула (2) содержит по существу чашеобразный корпус (3) с центральной осью (4), причем упомянутый корпус (3) содержит нижнюю стенку (5), боковую стенку (6), проходящую от у
