If your not careful you get the gluten in the spices. Is wheat used in many things that you may think of like Soy sauce has wheat in it. so if your recipe requires Soy sauce you need to find the wheat free kind. LA CHOY makes gluten free soy sauce. There is a great Gluten free store in Lynnwood on old hwy 99/evergreen way called Jannells Gluten free market. She has all the new and up and coming products that are out there. long haul from Ssilverdale, but they have a FB page and you could ask there. They deal with all kinds of food allergies/issues so they are likely aware of nitrates that i am not.