Mostly found in whiskeys, beers, and animal feed. It can also be found in some health foods.
In foods that are high in carbs like potatoes. Also in germinating seeds.
Barley
Mostly barley
Barley, wheat a few other grains, and potatoes are Iowan foods. More notably is the barley and wheat, as those are the most harvested from the state.
gluten is a protein composite found in foods processed from wheat and related grain species, including barley and rye. Many processed foods contain smaller amounts of gluten from ingredients such as "modified food starch," so there may be gluten in foods such as catsup, beer, and ice cream. Also, foods that do not naturally contain gluten, may have some gluten as a result of being processed at a facility that makes other foods.
They grew wheat and barley
wheat, barley, corn, vegtables, and fruit
Most beers contain barley. Other than that, not much. Barley water, obviously, You can get barley grits and barley flour, so also barley breads. Pretty uncommon though. Pearl barley is used a lot in soups, but mostly only in home cooking, not so much in canned soup.
Yes, Barley does contain gluten. Many types of beer are made with barley (or wheat, or both). It can be found in breads and cereals, which often contain barley or barley malt.
Wheat barley oats Rye corn
A gluten-free diet is a diet that excludes foods containing gluten. Gluten is a protein found in wheat (including kamut and spelt), barley, rye, malts, and triticale.