Halibut with seasoning

1/2 pound mushrooms small 1 1/2 cups fish stock 1/2 cup greek olives pitted (black) * 4 each halibut steaks cut into 3/4inch slices * 1 x milk * 1 x salt * 1[...]

3 lbs halibut, cut into pieces 1 extra large white onion, cut into rounds 2 large leeks , cut into rounds 1 pinch saffron 5 medium tomatoes , cut in rounds 2[...]