Taco Bell serves up some super-spicy cuisine for those who dare. The Volcano Nachos are red-hot (as the name implies.) However, the calorie count might make your heart erupt. They tip the scale at 970 calories, 520 of which are from fat. It features all of the fixins for a well-rounded, gut-busting Mexican meal: fried tortilla chips, beef, beans, cheese sauce, sour cream, jalapeno peppers, and Taco Bell’s lava sauce, which is mayonnaise-based.