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Every time a restaurant in America tries to grab attention with some sort of gargantuan portion which clearly no individual (or even a small party) is meant to eat, it ends up being an example of American portions being out of control. In Japan, such over-size offerings are seen for what they are, a joke. Well, they might also be a bit of a challenge for more gluttonous sorts, but I doubt few would opt for the types of carbo-overkill offered at this restaurant near Kagurazaka station.
As for what they are offering, you could buy 2.5 kg/5.5 lbs. of fried rice (cha-han) for 5840 yen ($72), 100 pot stickers (gyoza) for 9600 yen ($117), 3.2 kg/7 lbs. of ramen for the bargain price of 1890 yen ($23) or an enormous pot sticker (2.3 kg./5 lbs.) for 9600 yen ($117). I'm guessing the ramen was the big seller in the crowd given it's reasonable price.