Keep Kobe flank steaks frozen until you are ready to cook them, then thaw according to Safely Defrosting Food for Maximum Flavor.
Flank steak is traditionally marinated prior to grilling/broiling. It is also sometimes braised. Flank steak marinades usually include vinegar, wine, pineapple juice, or other acidic ingredients to help tenderize the meat. You should always cut this steak across the grain of the meat.How to Tell Steak Doneness by FeelFlank, Hanger & Skirt Steak Recipes
Recommended Internal Cooking Temps:
Rare - 120°-125°
Medium Rare - 130°-135°
Medium - 140°-145°
Medium Well - 150°-155°
Well Done - 160° and above