Au gamin de Tokio was recommended to me some time ago as a place to try an amazing truffle omelette. I had an impression, therefore, of a somewhat informal brunch place that also did dinner. The reality is a bit more glam than that - a cool, modern, open-kitchen eatery populated with young attractive staff and prosperous, sophisticated customers (with prices to match). It's more an 'up' destination than a place to chill; a place to see and be seen for the glitterati of Shirokane.
The food is cooked at an island in front of the tables in the layout you can see below. If you're really lucky, like me, you can have them doing the washing up right in front of you too. The quite large menu, which you can also see below propped up on an easel, is comprised of three lists - cold entrees, warm entrees and mains, as well as sides including french fries and lentils (bad luck if you can't read Japanese). The way of ordering is also somewhat complicated and took me a while to get my head around. They recommend half portions of each item but the menu only has the price for full portions. It would be better in my humble opinion to have a course menu.
The quality of the food is quite good, but I would have liked it if they went a bit easier on the vinegar in some of the dishes. The speciality of the house is the truffle omelette, which is probably worth making a special visit for! It's also a pretty good place to take foreign visitors to get the feeling of a contemporary Japanese/ international style eatery. Just take someone who speaks and understands Japanese as the menu and ordering is quite a process!
Marinated eggplant - too much vinegar IMO
Ham and mozzarella
Porcini and cheese salad
Scampi with mini cannellonis stuffed with prawn and scallop. The bearnaise style sauce was very tart (probably would be nice to go a bit easy on the vinegar)
The truffle omelette, which for me was the main event, is a must try
Confit of duck which was competent enough
Strawberry daifuku (nouvelle style!)
Raspberry millefeuille was very good