As of March 2014, lunch is not offered (only dinner is available).
Chagessai offers a Chinese dining menu that features yamucha (dim sum) items such as gyoza (pot stickers), tan tan men (spicy noodles) and the most popular; roast Peking duck, which is definitely worth a try.
It’s located just a 10 minute walk from Odori Station, 3 blocks South and 4 blocks West.
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