Looking for an easy way to add a serving of healthy fiber to your next salad? The Doctors reveal the vegetable you should include and it's something you may have never even tried.

Watch: Get Your Much-Needed Fiber with These 3 Snacks

They suggest adding kohlrabi, also called German turnip, which has more fiber than lettuce, cabbage, broccoli, or cauliflower. In fact, just 1 cup of kohlrabi will give you close to 20 percent of your recommended daily amount of fiber. 

Watch: Permanently Lose Weight by Eating More Fiber?

Kohlrabi is also packed with vitamin C, vitamin B, and potassium. After tasting it, ER physician Dr. Travis Stork -- who had never tried the vegetable -- says, "I like it," and think it would also be nice sauteed with some balsamic vinegar. 

Watch: Three Salad Swaps to Save You 300 Calories!

Are you looking for even more healthy food and meal ideas and tips? Get all the recipes seen on The Doctors!