Originally Posted by: Jane 
<p>So it can be frustrating. A book or magazine index never changes because the source is print but online sources are fluid.</p>
This is such a universal problem, and fully 25+ years into the internet, nobody has a solution.
Wikipedia is a universal research source today, but it can’t be cited, because you can’t get back to an article as it was on a specific date. Ten years ago, they said they were working on the ability to do so, but it has never materialized.
When I’m interested in an online recipe, I print and save as a PDF into a folder on my computer. For recipes from news feeds like the New York Times, this is crucial, as they are only available for a limited time — the link will eventually ask you to subscribe to a service. Recipes I revisit, I transcribe into my own digital cookbook, which has the advantage, that I also have it on my phone in my pocket, and shopping lists or being on vacation are never a problem.