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How do I disable cookies before visiting a particular web site and reinstate them after the visit?

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I am using Firefox 6.0.2 on an Apple Mac running OS 10.5.8. I want to discover how the site I am visiting behaves when it is accessed by a stranger.

I am using Firefox 6.0.2 on an Apple Mac running OS 10.5.8. I want to discover how the site I am visiting behaves when it is accessed by a stranger.

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You could visit the site in Private Browsing mode .

The site will not have access to any cookies that were set outside of Private Browsing - it will be as if you are visiting for the first time. Any cookies the site makes will be lost when exiting Private Browsing.

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Many thanks. Using Private Browsing seems to make me invisible to web sites (e.g.amazon.uk) which is just what I wanted.