A handful dried wild mushrooms
125g pearl barley or quick-cook barley
1 large onion
2 tbsp olive oil
1 large carrot
1 medium leek
2 litres vegetable or chicken stock
4 sprigs parsley
4 sprigs snipped fresh dill or 1 tsp dried dill
1 bay leaf
300g chestnut mushrooms
½ tsp fine sea salt
Generous pinch white pepper
10 grinds black pepper