The cheese is then cast into molds, sometimes with a traditional perforated ladle called a pelle à brie. The 20 cm (8 in) mold is filled with several thin layers of cheese and drained for approximately 18 hours. The cheese is then taken out of the molds, salted, inoculated with cheese culture (Penicillium candidum, Penicillium camemberti) or Brevibacterium linens, and aged in a controlled environment for at least four or five weeks.