1. A capsule (1A, 1B) for preparing a food product in a device adapted to supply liquid to a capsule containing at least one compartment (13) with food ingredients mixed with the supplied liquid for preparing a food product and a filter (18, 20 ), designed to remove contaminants in the liquid, characterized in that it has a selectively open gas inlet (34) located outside or inside the capsule and designed to supply gas from the outside to the compartment (13) of the capsule (1A, 1B) without passage waiting for it through the filter (20) .2. A capsule according to claim 1, characterized in that the gas inlet (34, 54) is made in the rigid wall (23, 5) of the capsule and in the open state has a predetermined size. A capsule according to claim 1, characterized in that the gas inlet (34, 54) is hermetically sealed with a punched membrane (4) or contains a bursting closure element. A capsule according to any one of claims 1 to 3, characterized in that the gas inlet (34) is connected to a liquid channel (33) located downstream of the filter (20) and in communication with the compartment (13) .5. A capsule according to claim 4, characterized in that the channel is located upstream of the outlet nozzle (26) in communication with the compartment (13) .6. Capsule according to any one of claims 1 to 3, characterized in that the gas inlet (54) is remote from the channel (33) and communicates directly with the compartment (13) without being connected to the liquid channel (33). 7. A capsule according to claim 1, characterized in that the cross section of the filtering device (18) is smaller than the cross section of the compartment with the ingredients. The capsule according to claim 1, characterized in that the filter is a filter1. Капсула (1А, 1В) для приготовления пищевого продукта в устройстве, приспособленном для подачи жидкости в капсулу, содержащая по меньшей мере один отсек (13) с пищевыми ингредиентами, смешиваемыми с подаваемой жидкостью для приготовления пищевого проду
