Tasty American-style burgers are the main draw at this casual diner, along with tacos and small tapas-style dishes. They also serve some top-notch craft beers from Nagano brewery Shiga Kogen on tap (IPA plus one seasonal beer), along with US craft beers from Lost Coast and Sierra Nevada in bottles.

The classic cheeseburger is topped with a sharp cheddar and excellent (optional) home-made bacon. Other add-ons include jalapeno peppers, chili beans and avocado. There's also a very appetizing lamb burger served on a crunchy focaccia-like bread with a tangy mustard dressing and alfalfa sprouts. The voluminous Caesar salad is one of the best we've had in Tokyo, and big enough to share as a side dish for your burgers.

El Pato's compact dining room is casual and lively, with friendly staff and a bustling atmosphere when they're busy. If you're in the mood for some fresh air and people-watching, there are a couple of tiny sidewalk tables overlooking a busy pedestrian shopping street. Prices are quite reasonable - burgers start at Y980, and pints of Shiga Kogen beer are also Y980.