The classic Egg McMuffin breakfast sandwich is turning 40 and McDonald’s of the Greater Bay Area is throwing a party to celebrate. Made with fresh cracked USDA Grade A eggs, the Egg McMuffin is McDonald’s signature breakfast sandwich and uses the same quality ingredients it did 40 years ago. To celebrate the milestone, McDonald’s of the Greater Bay Area invites consumers to relive the classic breakfast sandwich and learn new trivia about the Egg McMuffin through Twitter and local radio stations. Herb Peterson, a McDonald’s franchisee, created the Egg McMuffin in 1972 because he wanted a breakfast offering served before 11 am. Now, to continue the celebration of the breakfast classic, McDonald’s of the Greater Bay Area is giving consumers a chance to rediscover the reason the Egg McMuffin is an iconic breakfast choice. “The Egg McMuffin hasn’t changed much in 40 years. In fact, it can still fit into its original wrapper at just 300 calories,” says David Martinelli, McDonald’s USA Pacific Sierra Region marketing manager. “The classic sandwich still includes a freshly toasted English muffin, a slice of lean Canadian bacon, a fresh cracked egg, and a slice of melted American cheese, just like it did 40 years ago.” To celebrate the milestone, McDonald’s of the Greater Bay Area is inspiring consumers to share their photos on Twitter with @McD_BayArea through a 40-day photo-a-day program. Followers can post photos and Tweets of the classic Egg McMuffin in their favorite places. The wholesome breakfast choice was created in Santa Barbara, Calif., in August of 1972, when Herb Peterson experimented with a modification of his personal breakfast favorite, eggs benedict. He later introduced the breakfast sandwich to McDonald’s president, Ray Kroc, who loved the sandwich so much that he ordered it to be launched nationally, thus putting breakfast on the menu for McDonald’s. Today, McDonald’s breakfast menu has expanded to offer a variety of choices from Fruit & Walnuts to the savory Bacon, Egg & Cheese Biscuit. The Egg McMuffin is sold around the globe, sometimes with local variations that include ingredients such as chicken, tomato, or ketchup.