Nutritional yeast is an inactive yeast packed with ermm nutrients.. Honestly this stuff is a game changer. It's so good for us. High in B vitamins, protein, fibre & essential minerals. & it tastes a bit cheesy even though it's vegan (& gluten free). I rolled my potatoes in oil & then coated them in nutritional yeast & baked. It didn't burn & they were the perfect amount of crispy. Eat them responsibly & they are a great addition to a healthy diet.