In the ensuing years, Highland Specialty Grains has been working to improve all of the varieties in its portfolio, including the hulless or naked food barley varieties. Hulless or naked barley has a grain for which the flower parts composing the hull do not adhere to the grain. During harvest, the hull is removed from the outside of the grain. 

Examples of improved hulless varieties include high-protein, hulless lines that have grain yields that are over 90% of the conventional check variety with significantly higher protein content. The higher protein content could be advantageous for applications for which more protein is desirable. 

Another example would be the increased content of beta-glucan. Some of the proprietary varieties have beta-glucan content above 15% with better grain yield than older varieties being grown for beta-glucan content. Other agronomically important traits, such as maturity, lodging and tolerance of environmental stresses, have also been improved in the new varieties.