As a former Ryerson grad, I'm really sad this place wasn't open earlier! I would have visited this place weekly!
Santouka has awesome ramen both with or without soup. The ramen has just the right chewiness and texture.
I love ginger and during the winter time they have a special Ginger Ramen which is extremely satisfying. Warms you right up on a cold day.
During the Spring and Summer, my favourite is the Tsuke-men. This is a thicker style of cold ramen that you dip in a hot soup. I like having it with the spicy soup. The concept of eating this is similar to having Soba but the noodles are completely different.
Service is fast and friendly but be prepared to wait during peak hours as this place is small. You'll also sit very closely to other people so conversations aren't that private.
Highly recommended!