Place the vegetables, cut into large pieces, and the bones in the oven for 10-15 minutes. The products should be well browned.
Place the bones in a saucepan, cover with cold water, add salt and set over medium heat. When the broth starts to boil, skim off the foam with a slotted spoon and reduce the heat to almost minimum. Cover the saucepan with a lid, leaving a gap for steam to escape.
After 2 hours, add vegetables and parsley root. Cover the pan with broth and leave to simmer for another 1 hour. Then add pepper, bay leaf and remove from heat. Let the broth steep for 15-20 minutes.
Strain the finished broth through a fine sieve and use.