The "standard" mac & cheese has egg white in it. There may be different kinds at some of the different restaurants/counter service, but ALWAYS let them know you have an allergy! At least 2 or 3 times a week I encounter a guest who AFTER the meal, let's us know that they have allergies! At that point, it's too late. Just a couple weeks ago, there was a little girl who had a peanut allergy and the family never told the server, never asked to see the chef, nothing! Well, she ate a chocolate chip cookie and then ended up in first aid all broken out in hives. I told the mom that while the cookies don't have any nuts in them, they're made in a facility that also makes peanut butter cookies and that's why we warn against them for peanut allergies. She looked at me like I just grew a third eye! Please! Always let the server know about any allergies! Sorry to rant, but I see it all the time!