Barley

Barley is often used in soups, stews, and fermented foods like beer, and its histamine profile largely reflects the context in which it's used.

• Context matters — plain cooked barley is lower concern than barley found in processed soups, fermented products, or beer, where histamine levels are harder to predict and other high-histamine ingredients are often present

• Leftovers and storage — as with most cooked foods, eating freshly prepared barley rather than storing it for later is a reasonable general precaution for histamine-sensitive individuals

Cooking fresh and eating soon after tends to keep things on the milder side.