I am not a vegan , vegetarian or wathever-tarian but Cafe Matsuontoko located in Kyoto was really good and their burger tasted like meat.
S and I got lost and took a wrong turn but with the help of a local staff in one of the stores, we found the place. It was cozy and most of all , NO SMOKING.
It was our first time so we were both cautious and decided to order a burger set. I got the Nanban Burger with Tartar Sauce and S got the Avocado Burger. The burger itself was not that big but it was so good. I think I finished it in less than 2 minutes and of course with all the walking I did that day, I was famished. The staff can also speak some English so you can ask what they used if you have some allergy or on strict Vegan diet. But one thing I can stay, when I am in Kyoto, I will definitely go back there and try some of their other burger.