I decided to push the boat out a little, and ate at Imahan (今半), within the Takashimaya department store in Shinjuku. I felt really hungry, so I went for the 特盛牛すき焼弁当 (large beef sukiyaki lunch set) which has 1.5 times the meat of the normal-size version. Sukiyaki, if you've not tried it, is where you dip the meat/tofu/ vegetables (pre-cooked in sauce) into raw egg before you eat it. The rice also had free refills, and the miso soup was great. I hadn't had sukiyaki for quite some time (it's often a winter dish) so it was a really nice treat!