Celiac.com 08/25/2016 - You just got diagnosed Celiac and are wondering how serious this really is. What if there is just a little gluten in your food? What if you use the same toaster for your gluten-free bread as your wife's/husband's regular bread? What if those french fries are gluten-free but they fry them in the same fryer as those nice gluten coated onion rings?
So let's assume these french fries are nice and crispy and they share that fryer with those delicious onion rings. The answer is, stay away. You most definitely will end up consuming gluten. You may not have a reaction that you notice from these french fries, as some people are more sensitive or less sensitive, but that does not mean they are not causing an autoimmune reaction and causing damage internally.
My advice: get your own dedicated gluten-free toaster; ask and ask again if sauces contain gluten; ask if the fryer shares space with gluten containing items and even let your server know you have celiac disease and to let the chef know. Your server may not know enough about gluten and celiac disease, but chefs almost always do and will understand the severity of it. I have had much better luck eating out when I have my server actually let the chef know I am celiac. There have been many occasions where my server said something was gluten-free without asking the chef and in the end I ended up sick in bed because of it.