Soak the dried mushrooms in warm water for 30 minutes, discard the hard stems.
Put all the ingredients in a casserole and then place the casserole in a roasting tin.
Fill the tin with hot water up to the middle of the casserole and cover with either a lid or tinfoil.
Place in an oven heated to 150°C, 300°F/Gas 2 for 2 hours.
Adjust the seasoning.