Take, for instance, the famous Julia Child's cookbook, "Mastering the Art of French Cooking". The recipes themselves are not protected, but the way they're written and presented is. If you were to recreate the exact same recipe, with the same text and images, you'd be infringing on the publisher's copyright. But, if you were to use the same recipe and rewrite it in your own words, with your own images, you're probably okay.
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Another example is food bloggers who share recipes on their blogs. If they're using verbatim copies of recipes from cookbooks or other sources, they might be infringing on the publisher's copyright. But, if they're rewriting the recipes in their own words and adding their own images, they're likely safe.
In conclusion, copyright law is like a game of chess - you need to understand the rules to play it well. By knowing what's protected and what's not, you can create and share your own recipes without worrying about legal issues. So, go ahead, get cooking, and don't forget to add your own special touch to make it truly original!