Asahi is certainly not a particulary special brand of beer as they are known, as most big beer companies are, for their ubiquitous lager style. However, they also make a black lager (also called schwarzbier) that is really smooth and without the bitterness typically found in darker beers.
Sue and I went to a kick-ass DIY BBQ place over near the new government building and besides the amazing food, they also had what they called Asahi 1/2 and 1/2; a glass of beer that is half Asahi Dry and half Asahi Black.
I was expecting something like a black and tan, but what I got was a glass of really dark beer that had the crisp finish of the Dry and the malty tones of the Black.
Drink lots of this if you can find a place that offers it, or get creative and make it yourself.