I have it, but use it rarely. I mostly use it for making spicy tuna when I make sushi hand rolls. For that, I add Kewpie mayo, sriracha sauce, masago (fish roe), green onions, and sesame oil to chopped up raw bluefin tuna. You can see with all the other ingredients it’s hard to discern the mayo taste in isolation.
I like egg salad sandwiches, and have always made it with Best Foods. But one day I decided to use the Kewpie since I had it, and also since the sandwiches are “famous” in Japan and beloved by many. Well, I did not care for it as much as Best Foods for that application. I thought I detected a hint of a mustard taste, which I thought must have been my imagination.
I recently came across a r e d d i t post (is it ok to link it in these Jury Room private forums?
LINK) that said there was USA made and Japan made versions! I didn’t know that. The poster there says the USA made ones have sugar and mustard flour, while the Japan one does not. So, I did taste mustard; I must’ve had the USA version. I’ll be checking labels the next time.
I like Best Foods mayo with a little bit of soy sauce stirred in to eat with steamed vegetables, like a dip. Broccoli, cauliflower, green beans. Yum.