This is a brazilian favorite and one of our family's too! Beef strogonoff comes in a flavor-rich heavy cream sauce, with a touch of ketchup, mustard and soy sauce, along with chopped mushrooms. It is perfect when served with white rice, potato sticks and a green salad. I particularly am not very fond of mushrooms, so I leave it out of the recipe when I make it for my picky eaters at home, but I am posting the original recipe for this brazilian dish. Enjoy!