I would recommend trying anything with the shitake mushrooms in it - they are very tasty. However, I find Copper Branch to be a bit overpriced when compared to other options in the area (the bowls here are ~$3 more than most alternatives and are also smaller). The burgers are also a bit overpriced, but do you really have another option when it comes to plant based food in the PATH? Otherwise, I think the food can hit you quite hard and you can feel a bit bloated and lethargic after eating here.
I gave Copper Branch a try when I first started eating vegetables during the work week. My first order from Copper Branch was a portobello mushroom burger ($9.75); this turned me away from Copper Branch for quite a while. I took a bite into it and my tongue was burnt - it also was not that tasty.
Two weeks later, I got tired of ordering the exact same thing from Kupfert & Kim every day. I gave Copper Branch another try - I got the shitake teriyaki burger ($9.75). Now, this is a fairly overpriced burger, just like the first - but this one actually tasted really good.
From there on out, I actually frequented Copper Branch - I got either the general copper bowl ($14.25) or the shitake teriyaki burger ($9.75). Some times I order it with extra shitake, but I feel like it's just a bit too much at times. I don't know why, but after I eat at Copper Branch, I often feel a bit bloated and lethargic - the food is tasty though!