The next time you want to use your recipe book in the kitchen without messing it up, you can use a common kitchen item: plastic wrap.
Place your cookbook on the counter, cover it with plastic wrap, and you're good to go. If your recipe requires you to turn a page, you could open it up to the page you want and first wrap that page up. Then, holding that page up, wrap the rest of the book. You'll be able to move the page while your book stays protected.
The One Pot Chef's original hack in the video above involves using a plastic bag, such as a Ziploc, but that makes turning pages a little difficult. Plus, your magazine needs to fit into it. However, a Ziploc could be perfect to protect your iPad or other tablet while still being able to read recipes in it (and use the touch screen).
Quick Tips: Protecting Cookbooks in the Kitchen [The One Pot Chef Show]