1. Preheat grill to 300° to 350° (medium) heat. Cook first 4 ingredients in a small saucepan over low heat, stirring often, 5 minutes; reserve half of mixture.
2. Grill sausages, covered with grill lid, 10 to 12 minutes or until done, turning occasionally and brushing with remaining half of plum mixture during last 5 minutes of grilling. Remove from heat; let stand 5 minutes. Serve with reserved plum mixture.
Start with an Oktoberfest- or Märzen-style beer, each a delicious complement to the sausage board.
Try Bob's '47 Oktoberfest, Boulevard Brewing Co. (Missouri) or Clawhammer Oktoberfest, Highland Brewing Company (North Carolina)