Capsule for preparing a beverage in an extraction device, said capsule comprising a cup which houses an inner cavity for containing a food substance, said cup comprising: - a bottom wall intended to be penetrated by a liquid injected by the extraction device, - a front end, opposite the bottom wall, defining a dispensing opening intended to be penetrated by the extracted beverage, - a side wall extending around a central axis and in height along said central axis between the bottom wall and the front end; said front end comprising a collar projecting radially outwardly from the side wall; said collar being provided with a rear face facing the bottom wall and adapted to provide a seal when the capsule is inserted in the extraction device; said bottom wall comprising a recessed region towards the inner cavity; said capsule comprising a bottom cover which closes the recessed region and a dispensing cover which closes the dispensing opening, said central axis being perpendicular to the bottom cover, said capsule being characterized in that the recessed region is defined at least by a first wall and a second wall facing each other and spaced along a radial direction perpendicular to the central axis, said first wall and said second wall being joined together by a connecting wall which does not cross the central axis, wherein, being defined a first imaginary plane tangent to at least a portion of the first wall and a second imaginary plane tangent to at least a portion of the second wall, said first imaginary plane and said second imaginary plane is inclined so as to intersect the central axis, and wherein on said first wall and on said second wall first wall holes and second wall holes are formed, respectively, for the passage of the liquid injected by the extraction device into the inner cavity. said cup comprising: - a bottom wall intended to be penetrated by a liquid injected by the extraction device, - a front end, opposite the bottom wall, defining a dispensing opening intended to be penetrated by the extracted beverage, - a side wall extending around a central axis and in height along said central axis between the bottom wall and the front end; - a bottom wall intended to be penetrated by a liquid injected by the extraction device, - a front end, opposite the bottom wall, defining a dispensing opening intended to be penetrated by the extracted beverage, - a side wall extending around a central axis and in height along said central axis between the bottom wall and the front end; said front end comprising a collar projecting radially outwardly from the side wall; said collar being provided with a rear face facing the bottom wall and adapted to provide a seal when the capsule is inserted in the extraction device; said bottom wall comprising a recessed region towards the inner cavity; said capsule comprising a bottom cover which closes the recessed region and a dispensing cover which closes the dispensing opening, said central axis being perpendicular to the bottom cover, said capsule being characterized in that the recessed region is defined at least by a first wall and a second wall facing each other and spaced along a radial direction perpendicular to the central axis, said first wall and said second wall being joined together by a connecting wall which does not cross the central axis, wherein, being defined a first imaginary plane tangent to at least a portion of the first wall and a second imaginary plane tangent to at least a portion of the second wall, said first imaginary plane and said second imaginary plane is inclined so as to intersect the central axis, and wherein on said first wall and on said second wall first wall holes and second wall holes are formed, respectively, for the passage of the liquid injected by the extraction device into the inner cavity.