Ingredients

• 1 tablespoon olive oil
• 2 tablespoons butter
• 2 pork tenderloin, sliced 1 " thick
• 1/2 teaspoon salt
• 1/4 teaspoon pepper, freshly ground
• 1 onion, chopped
• 2 garlic cloves, crushed
• 2 cups mushrooms, cut in half
• 1/2 teaspoon oregano
• 1/2 teaspoon rosemary
• 1/4 cup sherry wine
• 2 cups chicken broth
• 2 tablespoons tomato paste
• 1 tablespoon cornstarch
• 3 tablespoons water
• 1 shallot, finely minced