Seitan turned out bitter
I want to know if it's flour or broth problem. I used onions for the broth only 2 times and both of them were slightly bitter. Other than that there was only dried garlic and soy sauce in it. (I fried onions until golden beforehand)
Sorry if it's a stupid question, but the flour I used was supposed to be "high quality", which is why I don't think it should have such aftertaste.