SOUTH FORSYTH — A Cumming restaurant worker’s dish is being served up all across the country after he won a recent contest. Cole Smith, a 2008 graduate of North Forsyth High School, entered his “Slow Ridin’ Chicken Salad” in a national competition held by his employer, Mellow Mushroom, last month. The Home Grown Picks contest was open to all Mellow Mushroom employees across the nation and invited them to create their own unique items in the categories of pizza, salad, calzone, hoagie and cocktail.