This is by far the best Taiwanese food I have had in Boston. We shared the 5-spice beef noodle soup and the fried porkchop. The broth of the noodle soup was suprisingly weak, but everything else was amazing. The noodles are as good as Buk Kyung (high praise); beef chunks are from traditional cuts and spiced perfectly; mushrooms were traditional and provided a somewhat smoky and sweet, earthy counterpoint.
The porkchop was fried crispy, the meat still juicy and tender. The breading was lightly spiced and aromatic. I loved the baby bok choi half heartedly tossed in and the pickled cabbage on the side (very authentic). Underneath the pork chop was chopped barbecued pork. Again, very well flavored.
Sorry for the too vague descriptions, but pressed for time and wanted to get my rave up there before I forgot. Go to Wisteria House. Order Taiwanese dishes.