Our Food. Your Questions. You asked questions about our food. Here are our answers. Iowa Teacher Who Lost 60 lbs. Eating McDonald’s Shares His Story Does McDonald’s use real eggs? What are McDonald’s USA fries made of? What are McDonald’s Chicken McNuggets made of? What are McRib patties made of? Is McDonald’s beef real? How does McDonald’s prepare its eggs? What are the ingredients in McDonald’s fries? Why is the McRib seasonal? Where did the McRib come from? Why are McDonald’s burger patties frozen? Why is a McDonald’s burger so cheap? What are your questions about McDonald’s food? What’s in McDonald’s food? McDonald’s to Customers: What do you want to know about our food?