Barley is a whole grain, but only when it’s minimally processed. The type of barley you buy matters: hulled barley keeps all three parts of the grain kernel intact and counts as a true whole grain, while pearled barley (the kind most grocery stores stock) does not. The difference comes down to how much of the grain gets stripped away during processing.
What Makes Barley a Whole Grain
A whole grain contains all three edible parts of the kernel: the outer bran layer, the starchy endosperm, and the inner germ. Hulled barley meets this standard because processing removes only the tough, inedible outer hull while leaving the bran and germ intact. The FDA’s guidance on whole grain labeling is specific: “Dehulled barley should be considered a whole grain because only the tough inedible hull or outer covering has been removed, but the bran layer is left intact.”
Pearled barley, on the other hand, goes through additional polishing that strips away both the hull and the bran. That disqualifies it. The FDA states plainly that “barley that is pearled should not be considered a whole grain because some of the bran layer has been removed.” Harvard Health Publishing echoes this distinction: pearled barley technically doesn’t count as a whole grain because both the hull and the outer bran coating are removed during processing.
Hulled vs. Pearled vs. Hulless Barley
If you’re shopping for barley, you’ll encounter a few different labels. Here’s what they actually mean:
- Hulled barley: The least processed option. Only the inedible outer hull is removed, so you get the full bran and germ. This is the one that qualifies as a whole grain. It has a chewy, dense texture and takes longer to cook.
- Pearled (pearl) barley: The most common variety on shelves. The hull and bran are polished off, leaving a softer, lighter grain that cooks faster. It still contains fiber (barley’s fiber is distributed throughout the kernel, not just in the bran), but it’s lost some nutrients and doesn’t meet the whole grain definition.
- Hulless barley: A naturally occurring type where the hull is loosely attached to the kernel and falls off during harvesting, requiring little to no mechanical processing. It retains its bran and germ, so it qualifies as a whole grain. Hulless varieties also tend to have larger germ sizes than hulled ones, though they can be harder to find in regular grocery stores.
How Cooking Differs by Type
The processing difference between hulled and pearled barley shows up clearly in the kitchen. Hulled barley benefits from soaking in cold water for at least two hours before cooking and takes 45 to 60 minutes to simmer. Pearled barley needs no soaking and cooks in 25 to 30 minutes. Both use the same liquid ratio: 3 cups of water or broth for every 1 cup of dry barley.
Hulled barley has a nuttier flavor and more bite. Pearled barley is softer and creamier, which is why it’s the default choice for soups and stews. If you want the whole grain benefits but find hulled barley too chewy, hulless barley splits the difference nicely when you can find it.
Why Barley’s Fiber Stands Out
Barley is unusually rich in a soluble fiber called beta-glucan, which has a well-documented effect on cholesterol. Unlike most grains where fiber concentrates in the bran, barley’s beta-glucan is distributed throughout the entire kernel. This means even pearled barley retains a meaningful amount of fiber, though hulled barley still delivers more.
In a randomized controlled trial of adults with mildly elevated cholesterol, consuming 3 grams of high-molecular-weight beta-glucan per day from barley lowered total cholesterol compared to a control diet. The structure of the fiber mattered: lower-molecular-weight beta-glucan, even at higher doses (5 grams per day), didn’t produce the same effect. This suggests that less processed barley, which preserves the fiber’s natural structure, may offer a greater benefit than heavily refined forms.
Barley Contains Gluten
One thing to keep in mind: barley contains gluten, regardless of how it’s processed. The gluten protein in barley is called hordein, and it triggers the same immune response as wheat gluten in people with celiac disease. The FDA lists barley alongside wheat and rye as a grain that cannot appear in foods labeled “gluten-free” unless it has been processed to contain fewer than 20 parts per million of gluten. If you have celiac disease or non-celiac gluten sensitivity, barley in any form is off the table. Whole grain alternatives that are naturally gluten-free include quinoa, brown rice, millet, and oats (certified gluten-free).
Choosing the Right Barley for You
If your goal is to eat more whole grains, hulled barley is the clear choice. It meets every regulatory and nutritional definition of a whole grain, and it delivers the most fiber, vitamins, and minerals per serving. Look for it in the bulk bins section or the natural foods aisle, since it’s less commonly stocked than pearl barley.
That said, pearled barley isn’t nutritionally empty. Its fiber content is still higher than many other refined grains, and it’s a practical, affordable pantry staple. If you eat it regularly, you’re getting real nutritional value. You’re just not getting a whole grain. For anyone tracking whole grain servings based on dietary guidelines, that distinction matters. For a weeknight beef and barley soup, it may not.