ANSWERING THE IMPORTANT QUESTIONS: Mayonnaise is the most popular condiment in the U.S. So why does it have a bad rap? I love mayo, but I’m annoyed that, in a variant of “shrinkflation,” Kraft’s “Avocado Oil Mayonnaise” is now “Mayonnaise with Olive Oil,” meaning that it’s basically 34% Avocado oil and the rest soybean and canola oil. You can buy fancy brands that are all avocado oil, but they’re (much) more expensive. And to my taste, not quite as good.