<<Disclaimer: Verify this information before applying it to your situation.>> Jenny posted: <I tell them,(McDonalds) make the burger like normal, with all the condiments and other things on it, but let the lettuce act as the bun.> McDonalds will add all the condiments- unknown ketchup, a pickle of unknown vinegar origin, and perhaps some kind of mayonnaise mystery sauce. None of those items have been verified as GF, and may be changed without any notification to you ie glutenous THIS week. I'd recommend being on the safe side & just order burgers, tomato & lettuce. Those other items can cause a reaction/damage. Fran USA