I found a slow cooker recipe for pork roast using cola and decided to go in a different direction. I saw beefy mushroom soup mix at the store and decided to use it as well as add mushrooms & turnips. I also increased the amounts of the soup, mix, and cola so there would be more broth. This made an excellent and hearty stew. The turnips are have less carbohydrates than potatoes with 8g of carbs & 3g of fiber per cup compared to potatoes which have 32g of carbs & only 2g of fiber per cup. Although potatoes do have a higher vitamin & mineral content than turnips. I am diabetic so the less carbs the better.