Provide step-by-step instructions on how to make a delicious three cheese stuffed pasta shells, including the required ingredients, cooking techniques, and plating suggestions. Be sure to explain how to prepare and mix the three cheeses, as well as how to properly fill the pasta shells. Additionally, offer tips on how to achieve the perfect al dente pasta, and suggestions for tasty accompaniments such as garlic bread, salad, or wine. Consider also including variations to the recipe to cater to different dietary preferences or flavor profiles.
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