Chicken Broth in Gluten-Free Foods, Products, Shopping & Medications Posted August 24, 2006 · Report to Admin I add cornstarch to make it thicker. I am also curious about Wyler's bullion, we have jars of chicken and beef in the fridge. I think they have some ingredients that are suspect, but not obvious. Lisa I just got diagnosed recently, am now inspecting everything I had on my shelves. My Wyler's Chicken Bouillon cubes have wheat gluten right in the list of ingredients. The HerbOx are fine. I think Knorr are fine, too. A lot of these things are not clear and since I never had the nastier symptoms many people have when they are exposed to even a small amount, I could ingest gluten without knowing it. It's really helpful to read these messages that tell me when people react to things that seem innocent enough but could be affecting a lot of us without our knowing it!