Rainbow Peppercorn Steak au Poivre

Name: Rainbow Peppercorn Steak au Poivre
Ingredients: FOR THE STEAK; 2 New York strip steaks; 4 tablespoons rainbow peppercorns, coarsely crushed; 2 teaspoons flaky sea salt (such as Maldon); 1 tablespoon avocado oil; FOR THE SAUCE; 1 tablespoon butter; 1 shallot, finely minced; 2 garlic cloves, minced; 2 sprigs fresh thyme; 1 bay leaf; ½ cups cognac; ½ cups beef broth; ½ cups heavy cream; 1 tablespoon grainy Dijon mustard; 1 tablespoon crème fraîche or sour cream; Salt and freshly ground rainbow peppercorns to taste