By Kevin Burns, Beer Columnist One of the more interesting beer styles that American craft brewers have experimented with is the Dunkelweizen. Dunkelweizens are brewed as darker versions of wheat beers (Dunkel means "dark") and usually brown and cloudy from the yeast. They are brewed with complex malts and a light sweetness with low levels of bitterness. The common wheat and banana flavors are also present in this style. Brown's Brewing Company in Troy, NY has just started to bottle their Dunkel and I decided that this week was a great time to review it. Brown's Dunkelweizen poured a dark…