How can I stop Safari from continuously reloading cookies?

The worst offenders by far are New York Times, Washington Post and of course doubleclick. I would expect this sort of underhandedness from dubious news sites ...

Those are dubious news sites. If you don't like them, don't give them your business.

The selection will do exactly as it says. Select "Always block" if you want. Most sites simply won't work.

What sites are storing the cookies you don't want? Post a representative URL. Perhaps something else is going on.

Post a link/address to a web site that is adding unwanted cookies. For example www.apple.com.

Cookies are stored at ~/Library/Cookies/Cookies.binarycookies. As its name implies the file format is not human-readable.

The location is not relevant. What I want to know is the site responsible for delivering them. You wrote that they are from sites that you have not loaded. I don't take any particular action regarding cookies but I am unable to find anything resembling the ones you describe on the Mac I happen to be using right now, which is the reason for my question.

I have no idea where Doubleclick comes from.

DoubleClick is a Google subsidiary that derives its revenue from delivering targeted advertisements. It does so in conjunction with Google's pervasive personal information harvesting methods. The Internet runs on advertisements, and nearly all of them are delivered by Google. If you object to having your personal information repeatedly collected and sold to entities beyond your control, do not use Google's products. There will always be plenty of blissfully ignorant others for them to exploit.

junglejim1 wrote:

I can't imagine not using Google,

Then you have incompatible goals sir. Google delivers advertisements and deposits cookies on your Mac in exchange for your use of their products and services. The personal information it harvests from your use of those services is sold to advertisers. You consented to Google's terms of use by using it. Your familiarity with its intrusive nature is therefore presumed.

Perhaps the reason I am not experiencing what you are describing is that I do not use Google's products and services. Some of them are shown in the screenshot you posted. I don't have that problem.

Good luck.