what type of food did mcdonald’s originally specialize in when it first opened in 1940?

McDonald's originally specialized in barbecue food when it first opened in 1940. The first McDonald's restaurant was a barbecue drive-in in San Bernardino, California, featuring a large menu and carhop service. Their most famous offering at the time was hot dogs, not burgers. It was only later, in 1948, that the McDonald brothers shifted their business model to focus on a limited menu of hamburgers, cheeseburgers, fries, shakes, and other fast food items with a streamlined self-service approach.