Halibut with Grapefruit Beurre Blanc

Ingredients

• 3 tablespoons vegetable oil
• 4 1/2-inch-thick halibut steaks with skin (1 1/2 lb)
• 10 tablespoons unsalted butter
• 3 grapefruit (preferably 2 white and 1 pink or red)
• 2 tablespoons white-wine vinegar
• ¼ cup dry white wine
• 2 Belgian endives
• + 2 more ingredients
• • 1 pound fresh shiitake mushrooms
  • 1 shallot

Finely grate 1 teaspoon zest from a grapefruit. Squeeze 1/2 cup juice from a white grapefruit. Cut peel, including all white pith, from remaining fruit with a sharp paring knife and cut segments free from membranes. Chop enough grapefruit segments (use all colors) to measure 1/2 cup. Reserve 1 cu...

View full recipe at Epicurious