The food and shakes here are wonderful!
I went with a girlfriend here one night and we split a Chocolate-covered Strawberry Shake and a Gold Standard Burger.
The shake tasted just like a chocolate-covered strawberry! Totally hit the spot! It was a very comfortable portion for two people.
We added sprouts to our burger, which was excellent, I recommend you add those if you're a fan of sprouts. The burger overall was great and the fries that came with it we're totally up-to-par on the fries scale.
The service was cool. Everyone was nice and attentive, BUT they were almost too attentive. I felt like I was being rushed out of the restaurant and it wasn't even a busy time - I was there on a Tuesday night around 9 pm. Otherwise, I had a great time at Holstein's and I will definitely come again.