Similar to when it created Summer Shandy in 2007, Leinenkugel’s is setting out to create a new segment within beer with the launch of Leinenkugel’s Spritzen, a new line of beer with a splash of seltzer. Spritzen, which means “splash” in German, is a year-round addition to the Leinenkugel’s portfolio aimed at 21- to 27-year-old drinkers who…