Answer: Turnips are a rare keto-friendly root vegetable.
Although most root vegetables are forbidden on keto, turnips are one of the few exceptions. Many keto eaters turn to turnips to satisfy their old cravings for potatoes without taking on all the carbs.
At 4.6 g of net carbs per 100 g serving, turnips can fit comfortably within your daily carb limits. You can find plenty of keto turnip recipes for anything from faux mashed potatoes to vegetable soup.
For an even lower carb root vegetable, consider the radish. At only 1.8 g of net carbs per serving, radishes certainly give turnips a run for their money.