Mandarin Steak Salad

Name: Mandarin Steak Salad
Ingredients: 2 tablespoons orange or mandarin marmalade; 1 teaspoon minced ginger; 1 clove garlic; 1/2 teaspoon freshly ground white pepper; Salt; 1/4 cup fresh lemon juice; 1/4 cup wine vinegar; 1/4 cup fresh orange juice; 1/2 cup extra-virgin olive oil; 1 medium shallot, chopped; 1 (1/2-inch) piece fresh ginger, peeled and minced; 1/3 cup almond or extra-virgin olive oil; 1 tablespoon dark sesame oil; 1/2 cup rice wine vinegar; 2 (8-ounce) New York steaks; Salt and pepper; 6 large shiitake mushroom caps; 4 cups mixed salad greens; 2 tablespoons unsalted butter; 1 large shallot, minced; 1/2 pound shiitake mushrooms, sliced