MITCHELL, S.D.  (MITCHELLNOW) Grills are heating up across South Dakota as community Burger Battles kick off this month. The largest one, in Sioux Falls, is already underway for its 12th year, with around 40 restaurants participating. Mitchell, Brandon Valley, Watertown, and Brookings are a few of the other cities hosting their own burger battles. The goal is to give local businesses a boost during the slower winter months.