Hi Jen! To be honest, it’s hard to know for sure because there is variation between different oil brands. Some “light olive oil” brands we’ve tried does end up being slightly bitter, but definitely better than any result we’ve had with various brands of avocado oil. When refrigerated we found that our avocado oil mayo completely “hardened” and when “melting” back to room temperature turned into an oily puddle on the plate. We’re definitely keen to do more experimenting though!

It is states that homemade mayo should be used within 3-5 days, but we’ve had it over a week and it was still fine:) Hope that helps.

How many days will this last before it goes bad? Thank you

I think our nutritional calculator has some kind of error with the oil, maybe only calculating the 1/4 cup. The serving size is about one tablespoon. I'll try to figure out the problem asap. Thanks for bringing this to my attention.

Hi Elizabeth! I make this recipe at least once a week and have used both prepared and dried mustard (about a teaspoon), as well as a variety of different vinegars (whatever I have on hand). Although it won’t taste exactly the same as the original recipe, it will most likely still be yummy! Hope it turns out okay for you:)