I love Japanese flavors, but just like you, I don't get to dine in Japanese restaurants very often since I am vegan and allergic to soy. I can do soy in little amounts like tamari, but tofu or other soy-based products are a nono for me :( Fortunately, we have a Japanese friend here who happens to be a vegan and an excellent cook! I wish I could make this though because it looks so good and as always beautifully presented! Maybe I'll use your recipe as a base and try to make a soy-less version of it!