3 beef medallions with saucy shiitakes Recipes

vegetable oil , for frying medallions, vegetable oil, beef medallions, patted dry (about 4 oz each), kosher salt, plus more, kosher salt, for seasoning, fresh ground black pepper, shiitake mushrooms, stemmed (about 12 medium), shallots, coarsely chopped, garlic clove, minced, cognac or 1/4 cup other brandy or 1/4 cup madeira wine, chicken broth, light sour cream, chopped fresh parsley leaves

vegetable oil, vegetable oil, beef tenderloin , cut into 4 medallions and patted dry, kosher salt, plus more for seasoning, fresh ground black pepper, shiitake mushrooms, stemmed (about 12 medium), shallots, coarsely chopped, garlic clove, minced, cognac or 1/4 cup other brandy or 1/4 cup madeira wine, chicken broth, light sour cream, chopped fresh parsley leaves