8 facts about McDonald's hamburgers that might surprise you

According to the McDonald's website, in 1954, a Multimixer milkshake machine salesman by the name of Ray Kroc came across a small restaurant in San Bernardino, California, run by the McDonald brothers.

They opened the location in 1940, according to McDonald's. The very first McDonald's Bar-B-Q menu was large and its most famous offering was hot dogs. However, in 1948, the McDonald brothers switched the concept to become a burger restaurant and reduced the restaurant's offerings to just nine items: hamburgers, cheeseburgers, soft drinks, milk, coffee, potato chips, and a slice of pie.

In 1949, potato chips were swapped with french fries and McDonald's began selling milkshakes.

Due to the restaurant's self-service counter, there was no need for waiters or waitresses. Burgers were cooked ahead of time, wrapped in paper, and kept warm under a heat lamp, which meant customers received their food in record time.

Amazed by the efficiency of the restaurant, Kroc wanted in. He went on to become the first McDonald's franchise agent and the founder of the McDonald's Corporation.

At the original McDonald's locations, before Ray Kroc revolutionized the company, a burger cost just 15 cents, according to the company.

From the beginning, McDonald's has touted its burger sales in its advertising. Mother Jones reported that in 1955, McDonald's claimed it had sold over 15 million burgers — this was just seven years after the McDonald brothers closed their barbecue stand and reopened it as a burger joint.

Today, it's estimated that McDonald's has served billions and billions of burgers, with the Wall Street Journal estimating the chain sold its 300 billionth burger around 2013. 

According to McDonald's, the first Big Mac-esque sandwich was created by owner and operator Jim Delligatti of Pittsburgh in 1967, but it wouldn't be released nationwide until 1968.

It included two beef patties, special sauce, lettuce, cheese, pickles, and onions on a sesame-seed bun. 

The Associated Press reported she came up with the name on the fly when an executive running to a board meeting asked for a name nomination for the company's new burger. The name "Big Mac" stuck and went on to become one of the best-known product names of all time.

However, it wasn't until 1985 that McDonald's Corp. finally recognized Rose had come up with the name.

USA Today reported that the company sold roughly 75 burgers every second in 2013, or 4,500 burgers every minute. 

According to the nutritional info listed for a McDonald's hamburger, it contains 25% of your daily value of protein. While McDonald's food in general may not be healthy for you in excess, there are some menu items that are healthier than others in moderation.

"The plain burger is only 250 calories," dietitian Bonnie Taub-Dix told Taste of Home in 2019. "Plus, in comparison to other menu items, the sodium here is relatively reasonable."

The original idea for the Happy Meal is said to have come from a McDonald's employee in Guatemala named Yolanda Fernández de Cofiño. Fernández de Cofiño developed the meal deal to cater to kids visiting her restaurant.

In 1979, McDonald's rolled out its first Happy Meal nationwide. The first one was circus-themed. McDonald's advertising executive Bob Bernstein introduced the idea of swapping the small sundae for a plastic toy.

In 2021, McDonald's announced the chain would begin phasing out plastic toys from its Happy Meals in an effort to be more environmentally conscious. 

"Making our toys out of renewable, recycled, or certified materials will result in about a 90% reduction of fossil fuel-based plastic in Happy Meal toys [compared with 2018]," McDonald's said in a statement to NPR.