I have a condition called Celiac Disease [aka gluten intolerance] in which I must remove all gluten [a protein found in wheat, barley, rye & oats] from my diet. Yup - that's right - no pizza, no beer, no cookies, no cake,etc - unless they're gluten free. We have been able to replace all my favorites.
Gluten can be added or hidden in almost any food. It's the number 2 additive to processed foods [Sugar is #1]. Sauces, marinades, rubs - all ingredients must be checked on all foods. Then there are cross contamination issues. When I go to a friends house for a cookout, I will ask them to grill my items on a piece of tin foil, because I just don't know what has been grilled there before [or what their "grill hygiene" is]. The same goes for utensils too. If they are using a BBQ sauce that is not gluten free, I must make sure they use different tongs. Most times, I will grill stuff ahead, wrap it in tin foil and place it on the grill to warm it up. It makes things easier for me and my host
