Commercial mayonnaise is cheap, but have you ever tasted the real thing? It's not hard to make in the food processor.
i have discovered if you make mayo with extra virgin olive oil it is bitter with normal olive oil it is not 3x i made it with different virgin olive oils and it was bitter using normal olive oil it was not no idea why i hope this helps - 20 Feb 2009
i have made mayo like this for over 20 years though don't always add mustard re bitter mayo mine was the same last month i checked the olive oil i had and it tasted bitter it was new one i bought and had not bought this brand before so just check your olive oil in case that it the problem - 16 Jan 2009
I made this with extra virgin olive oil and the taste was quite bitter - did I do something wrong?? - 12 Nov 2008