Mayo has teams.
East coast = Hellmans’s, West Coast = Best Food’s. Same company, almost identical packaging. ALMOST identical recipes. Best Foods has been described as ‘slightly tangier’.
Then there’s the U.S. Southeast, with Dukes, which I’ve never had the opportunity to sample. It has a (smaller than the big two above but still) VERY passionate following.
And then there are those that like ‘Miracle Whip’, which as every right thinking person knows, is basically congealed goblin farts.
From there we have to cross one or more oceans before hitting the UK and/or AUS, where you have the ‘real mayo’ vs. ‘salad creme’ debate. Having no real experience between the two, I decline to pick a side here, but I know which way I THINK I’d go…
Finally, there is Kewpie, the Japanese mayo that is maybe a touch sweeter than Best Foods/Hellmans but has an additional hit of MSG in it to balance things out. It’s what makes your cheap califonia roll krab-salad taste that way, and is the base for any creamy karaage dipping sauce.
Of course, homemade mayo is better than ALL of the above and can be made in 2 minutes if you have an immersion blender handy.
Throw in a few garlic cloves for a quick aioli spread, 1/4-1/2 tsp MSG for your own Kewpie style, your hot sauce of choice for a spicy version, the possibilities are literally endless.