Right near 116 st a Chinese food truck that made the little corner seem like China. Offering 肉夹饃 (pork burger, chinese Northwestern style), which was very tender and fatty when I got it yesterday, for $3, and 鹵麵 noodle (stew noodles, for a lack of better word) prepared the way I like, somewhere between pan fried and lo mein style., for $5. good with hot oil.
Want to try: boiled dumplings the northern style and soft soy tofu.
No need to go just for this, but if you are a columbia U student home sick for food, you'll be happy you don't have to go all the way down to Chinatown for simple food.