How can I duplicate the flavor of Hellman's mayo? I have made all sorts of sauces in my life, but have always relied on Hellman's/Best Foods' mayonnaise. I recently began making homemade mayonnaise (hand beaten with a wire whisk) and found it very easy and quite fun. I used a recipe from an old Betty Crocker cookbook. The mayonnaise was fine, but bland. I've since looked at an assortment of other cookbooks.
I've tried upping the flavor of the mayonnaise in various ways, creating some truly weird-tasting stuff along the way. Nothing comes close to the flavor I associate with Hellman's/Best Foods' mayonnaise. Theoretically, using fresh ingredients, I ought to be able to make something that tastes better than Hellman's/Best Foods' mayo, but I can't make anything that tastes anywhere near as good.
I've tried soybean oil, corn oil, peanut oil, etc. and did not see that they made much difference. It's the added ingredients, I think, that are where the real flavor differences occur, but I am mystified by what Hellman's is doing that I am not. Any suggestions?