You need 1 ingredient. The key ingredients include: ["For the ""Cool Ranch"" shells", "1 tablespoon tomato powder", "1 tablespoon buttermilk powder", "1 teaspoon onion powder", "3/4 teaspoon sugar", "3/4 teaspoon garlic powder", "1/2 teaspoon cheese powder", "1/2 (1-oz.) package ranch dressing mix", "6 crunchy taco shells", "1 tablespoon canola oil", "For the ""Nacho Cheese"" shells", "1 1/2 tablespoons cheese powder", "1/2 tablespoon buttermilk powder", "1 teaspoon dehydrated sweet bell pepper (such as Zatarain's brand)", "3/4 teaspoon cheesy taco seasoning mix (such as McCormick brand)", "3/4 teaspoon onion powder", "3/4 teaspoon tomato powder", "1/2 teaspoon sugar", "1/2 teaspoon garlic powder", "6 crunchy taco shells", "1 tablespoon canola oil", "For the taco filling", "2 tablespoons all-purpose flour", "1 tablespoon chili powder", "2 teaspoons onion powder", "1 1/2 teaspoons paprika", "1 1/2 teaspoons salt", "1/2 teaspoon sugar", "1/2 teaspoon garlic powder", "1/4 teaspoon ground red pepper", "1/4 teaspoon turmeric", "1/4 cup beef stock", "1 teaspoon canola oil", "1 1/2 pounds 85% lean ground beef", "1 tablespoons cheesy taco seasoning mix (such as McCormick brand)", "1 cup sour cream", "1 1/4 cups shredded lettuce", "1 cup diced tomato", "1 cup shredded cheddar cheese"].