When Is Steak So Rare It's Blue? - Chowhound

There's more to identifying a rare or blue rare steak than just eyeballing the color of the meat. Beef's internal temperature is the official way to determine its doneness, and blue rare steaks have an internal temperature of just 115 to 120 degrees Fahrenheit. This is cool, comparatively: Rare beef sits at 125 degrees Fahrenheit, medium at 145 degrees Fahrenheit, and well-done cuts reach 160 degrees Fahrenheit.…