Blue Mountain Kölsch 151 is one such libation that fills the bill perfectly.
Kölsch 151 pours a transparent straw color with a moderate white head. The aroma bready malt with a touch of sweetness. The flavor is crisp and sharp with a slightly sweet grain base. The hop profile is grassy, with a touch of citrus. A bit of bitterness comes through in the finish, but the aftertaste is short-lived and clean. The overall impression is crisp and refreshing.
The brewery's web site describes Kölsch 151 as their "lightest beer." It's a "light beer" done right, quite unlike those flavorless "lite" liquids the factory brewers promoted as suitable Summer refreshments.