What Is The Juice In Steak? Posted on 27.04.2022Author Alice FelixPosted in RecipesLeave a Reply The liquid from a steak isn’t truly blood, despite Andrés’s quips that he was inspired by Dracula. Instead, the juice is myoglobin, an oxygen-storing protein that changes color when exposed to heat. Related posts: At What Temp Is Baby Back Ribs Done? How Long Do You Cook A Ribeye On A Traeger? How Many Calories In 1 Oz Flank Steak? How Long Steak Freezer?