How long would you keep this Caesar dressing? My Caesar dressing contains the following: mayonnaise, parmesan cheese, lemon juice, worcestershire sauce, garlic powder, fresh ground pepper.
How long do you think I should I keep it before I pitch it?
And why is it that bottled commercial dressings last months and homemade do not?
What do they have in theirs that we don't have in ours, and can't we put it in ours?
I make a nearly identical recipe for caesar dressing, and have safely used leftover dressing up to a week later. I can't vouch for any "technical" food spoilage rates, only that my friends, family, and I have never gotten sick from eating salad with dressing in this age range.

I can't speak to anything longer than that, as the dressing never seems to last that long!

As a closing note: if you are in doubt, don't eat it!