Sugar Free Fat Free No Calories, Fat, Carbs, Gluten or Sugars of Any Kind! Great Taste, No Calories! How do we do it? Rich Natural Flavors Walden Farms Calorie Free Ketchup has a rich natural tomato flavor made with California sun ripened tomatoes, pureed onions, lemon juice, crushed garlic, apple cider vinegar and more. Delicious on burgers and great for dipping. Switch & Save hundreds of calories every day "The Walden Way".