DIFFERENCE BETWEEN HULLED BARLEY AND PEARLED BARLEY;
HULLED BARLEY - also known as Barley Groats is the whole grain form of Barley, with only the outermost hull removed.. Chewy and rich in fiber, it is the healthiest form of barley. However, it takes longer to cook than Pearled Barley. about an hour or more.
PEARLED BARLEY - is the most common form of barley. It's still chewy and nutritious, but less so than Hulled Barley because the outer husk and bran layers have been removed. The polished grains are also softer and take less time to cook, about 40 minutes.
Most recipes that call for Barley intend to use Pearled Barley if not specified. It is usually fine to substitute Hulled Barley, just be aware you might need to adjust cooking time.