On Aug 20, 4:49*pm, " > wrote:
> Seriously, why is it necessary to throw out homemade mayonnaise after
> three or four days. *I usually make my own. *In the summer I add
> basil, tarragon or whatever herbs I grow. *I do use an egg, but keep
> my eggs in the fridge for up to a month and I haven't ever got sick
> from them.. *I guess Hellmans/Miracle Whip has additives that keep
> theirs safe forever. *Always feel kind of tentative though when I take
> my mayo out on the fifth or so day. *e.

I'm going on common sense here. I've never made homemade mayo. But
think of it like this: egg and olive oil basically. The egg doesn't
go bad in your fridge for a while does it? So why should your mayo.
I'd keep it refrigerated and that's it. But to be really safe, I'd
make it every two weeks. You can make small batches as well. One use
etc. Now having said that:
I have made emulsified salad dressings from scratch which are
basically mayo based. They have never had a lifespan past 30 days.
They were always used up by then. No complaints.