YASSSS now this was one legit burger. If you like Shake Shack's mushroom burger (I sure did), you'll enjoy this one immensely.
The HUGE mushroom chunk which had a perfectly cripsy crumbed exterior seemed to make the burger 7726268 times better. Your jaw might break in an attempt to stuff this into your mouth, but at least you'll end up with a broken jaw AND a happy stomach. Delish stuff.