The invention relates to a portion capsule for producing a beverage, comprising a capsule body (2), which has a capsule bottom (3) and a filling side (4), wherein a cavity (100) for accommodating a powdery or liquid beverage substrate (101) is formed between the capsule bottom (3) and the filling side (4), wherein a filter element (7) is arranged between the beverage substrate (101) and the capsule bottom (3).