Umami, and also slightly fishy. It is a bit of an odd flavor, I know some people aren't that fond of it, but I like it. I've never actually had real seafood, as I've been deathly allergic my whole life, but after I got used to it, I use seaweed in a lot of dishes as part of the base.

And tbf the Seitan thing is a bit of a stretch, just because whenever I make it, I make multiple servings of it to also use in later dishes, so its not like I'm making it only for the one ramen bowl. And Ramen is pretty perfect for it; after I've spent the time and effort to make it, I usually won't be in the mood to do more cooking, like say using the seitan in a stir-fry or curry. Cause while you can eat seitan on its own, its definitely best in something.