Pork Medallions in Wine Sauce with butter

2 (1 lb) pork tenderloin 1 teaspoon salt 1 teaspoon fresh coarse ground black pepper 1 teaspoon ground allspice 1/4 cup butter or 1/4 cup margarine , divided[...]

2 tablespoons butter , divided 2 tablespoons olive oil , divided 2 cups chopped leeks (white and pale green parts only, about 2 med.) 1 cup low sodium chicken[...]

2 lb. pork tenderloin (about 2 tenderloins) Kosher salt and freshly ground black pepper 3 Tbs. extra-virgin olive oil 3 Tbs. unsalted butter 2 medium shallots[...]

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 1 1/2 cups (1 1/2 ounces) dried porcini mushrooms 1 1/2 cups boiling water 1 (1-pound) pork[...]