Home > Food & Health > Nutrition > Cultural Foods > Louisiana Yams [Image: Louisiana Yams] Yams are one of nature’s most nutritious root crops and are among the most versatile of all foods. This publication includes information on how they can be prepared dozens of ways. Nutrition Expert Endorses Popcorn [Image: Popcorn graphic] Did you know that popcorn is one of the healthiest snacks, as long as it is not drenched in oil, butter or salt? Plain popcorn is an excellent, whole-grain, high fiber snack with about one gram of fiber for one cup.