Halibut with sauce

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[...]

6 tablespoons butter , divided 1 1/2 lbs boneless halibut steaks , cut into 1-inch cubes 2 garlic cloves , minced or 1/2 teaspoon garlic powder 3/4 teaspoon[...]

2 lbs halibut steaks 3/4 cup milk 3 canned chipotle chiles 6 garlic cloves , minced 1/2 teaspoon ground cumin 1/2 teaspoon onion powder 1/2 teaspoon salt 2[...]