I recently ordered a jar of Just Mayo from an online store and was sent a bottle that has a sell by date for about a month ago. The obvious complaint aside, it got me wondering how likely it is that such a product would actually be unsuitable for consumption. I mean, products like Just Mayo or Vegenaise don't have any eggs or dairy in them (its kind of their selling point). So they wouldn't 'turn' nearly as quickly as traditional mayonnaise, right?
My question is, how long would it take for an egg-free mayo to actually go bad? I've seen similar questions here about condiments and sell by dates, but whenever it comes to mayo, the eggs always come up as a key factor and that's not an issue with the products I'm talking about.