You can click "Save As" in "File" on the webpage, and then save the contents of a single webpage, so that you can view it whether you are online or not. Even if the original webpage is deleted by the website, you can still view the webpage you saved separately. If the cookbook has several pages, don't bother to keep it separately. This is a once and for all solution.
Of course, some food web pages are not allowed to be saved. In that case, I suggest you create a word document and copy all the recipes you want into the word document. This method is also very practical.
You can also copy the text of the recipe into a txt document and put it in your mobile phone. When you want to cook and forget the menu, you can check the menu in your mobile phone at any time.