The dressing contains raw eggs, olive oil, lemon juice, garlic, Worcestershire, mustard, salt and pepper. How long can I keep it in the fridge in a airtight container?

  • No garlic? Are you sure this is a Caesar dressing?
    – Aaronut
    Oct 27, 2010 at 2:47
  • of course there is garlic! but i don't think this has an effect on how long i can keep it.
    – Sly
    Oct 27, 2010 at 2:50
  • 3
    Actually it does. Garlic almost always harbours botulinum spores, which are anaerobic; they grow when they are protected from oxygen. Raw garlic in a Caesar type dressing is protected from oxygen and can therefore encourage growth of the spores. (This is the same reason you shouldn't keep raw garlic in oil.)
    – daniel
    Oct 27, 2010 at 7:29
  • It's anaerobic, but it's also got a relatively low ph, which botulism doesn't like. I don't think the garlic matters very much in terms of storage. Oct 27, 2010 at 13:45
  • @daniel: I see. I have updated my question with the full ingredients list. There is also lemon juice in the dressing and that certainly affects shelf-life...
    – Sly
    Oct 27, 2010 at 16:18

4 Answers 4


Up to 7 days (homemade mayo as well). Egg whites/yolks out of the egg (but not combined with the acid) can last 3-4 days refrigerated, and eggs in-shell are good for 2-4 weeks depending on processing.


Hmmm. It's the eggs that have the potential to cause problems. I'd say less than a week, or until the acid kills the egg, and causes the whole thing to de-emulsify.


You can age raw eggs by keeping them in the fridge for 3 days, so I would definitely say more than 3 days, but less than a week. I think the dressing would develop a bad consistency or start to taste too strong before it actually spoiled.

  • Could you explain this please? Keeping raw eggs longer = giving them more time to go bad.
    – daniel
    Oct 27, 2010 at 16:31
  • I don't get this one either. To temper an egg means to add a relatively small amount of hot liquid so as to warm it up without setting it, and allow it to subsequently be exposed to higher temperatures without instant setting. I have never heard of "tempering" an exposed egg by leaving it in the refrigerator for 3 days and would like to see some reference for this.
    – Aaronut
    Oct 27, 2010 at 16:41
  • maybe i used the wrong term? When I make macarons the recipe calls for me to keep the egg whites in the fridge for 3 days, to achieve the appropriate consistency. Yes, that was wrong term, sorry for the confusion.
    – Manako
    Oct 27, 2010 at 19:49

Raw eggs last 2 to 4 days in the fridge but only 2 hours at room temp, so I would only make what will be used within 24 hours, just to be safe.

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