A compostable capsule for making infusion or soluble beverages, comprising: - a cup in which there is defined an inner volume (V) in which there is contained at least one substance (S) to be infused or dissolved; said cup being provided: -- on one side, with a bottom with an outlet opening for the beverage, -- on the opposite side, with an inlet opening of a fluid; -- internally with an inner base comprising: --- a central portion covering the opening , --- a labyrinth portion arranged about the central portion , --- a perimeter edge arranged about the central portion , --- a beverage collection depression arranged between the perimeter edge and the labyrinth portion , --- a beverage conveying depression arranged between the labyrinth portion and the central portion ; - a cover sealingly fastened to the cup , to close the opening ; - an at least partially flexible sealing disc sealingly fastened on the inner base of the cup to ensure, together with the cover , a seal of the inner volume (V); wherein the opening for the outflow of the beverage is determined by the at least partial deformation of the sealing disc , a deformation which loses the sealing of the volume (V); wherein the cup , the cover , and the sealing disc are made of compostable material; characterized in that the cup , the sealing disc and the cover comprise polylactic acid (PLA) and/or polybutylene succinate (PBS) and/or polyhydroxyalkanoate (PHA). - a cup in which there is defined an inner volume (V) in which there is contained at least one substance (S) to be infused or dissolved; said cup being provided: -- on one side, with a bottom with an outlet opening for the beverage, -- on the opposite side, with an inlet opening of a fluid; -- internally with an inner base comprising: --- a central portion covering the opening , --- a labyrinth portion arranged about the central portion , --- a perimeter edge arranged about the central portion , --- a beverage collection depression arranged between the perimeter edge and the labyrinth portion , --- a beverage conveying depression arranged between the labyrinth portion and the central portion ; -- on one side, with a bottom with an outlet opening for the beverage, -- on the opposite side, with an inlet opening of a fluid; -- internally with an inner base comprising: --- a central portion covering the opening , --- a labyrinth portion arranged about the central portion , --- a perimeter edge arranged about the central portion , --- a beverage collection depression arranged between the perimeter edge and the labyrinth portion , --- a beverage conveying depression arranged between the labyrinth portion and the central portion ; --- a central portion covering the opening , --- a labyrinth portion arranged about the central portion , --- a perimeter edge arranged about the central portion , --- a beverage collection depression arranged between the perimeter edge and the labyrinth portion , --- a beverage conveying depression arranged between the labyrinth portion and the central portion ; - a cover sealingly fastened to the cup , to close the opening ; - an at least partially flexible sealing disc sealingly fastened on the inner base of the cup to ensure, together with the cover , a seal of the inner volume (V); wherein the opening for the outflow of the beverage is determined by the at least partial deformation of the sealing disc , a deformation which loses the sealing of the volume (V); wherein the cup , the cover , and the sealing disc are made of compostable material; characterized in that the cup , the sealing disc and the cover comprise polylactic acid (PLA) and/or polybutylene succinate (PBS) and/or polyhydroxyalkanoate (PHA). <EOS>