I know this thread is a little old, but......

I recently made a stew, substituting turnip for the potato. the turnip still had a strong bitter flavor, and was only tolerable once i cooked it down and it almost turned to mush. But I stumbled onto something better - Kohlrabi!

Kohlrabi is just like a turnip, but without the harsh turnip taste. I believe the carbs are about the same. The flavor is so mild its perfect for stews and soups! yummy. :-)