This recipe was found on Piskeriset på eventyr
500 g fresh Lurid Boletes
5 dl pickling vinegar
1 dl cider vinegar
1 dl sherry vinegar
1/2 dl balsamic vinegar
1 tsp dried chile de arbol
4 bay leaves
2 tbsp demerara sugar
1 tsp pink peppercorns
1 tsp salt
1 tsp coriander seeds
Carefully wash the mushrooms and cut them into bite-sized pieces. Place the rest of the ingredients in a pot, bring to a boil, add the mushrooms and let simmer, covered, for half an hour, stirring occasionally. Pour the mushrooms and brine into a sterilised jar, seal, and store in the refrigerator for up to a month.