A viral TikTok video appears to show how a McDonald's Big Mac is made

• A TikToker who claimed to be a McDonald's employee shared how Big Macs are made.
• The video broke down the process, from toasting each bun to properly stacking the burger.

A TikToker who claimed to be a McDonald's employee shared how the restaurant's classic Big Mac is made.

This month, a TikTok account called @essentialmcdonalds uploaded a video that amassed more than 1.9 million likes and 6.9 million views at the time of publication. The TikTok account has more than 638,000 followers who watch its videos for glimpses into the McDonald's kitchen.

The TikTok user claimed that employees use separate toasters to warm the three buns, referred to as the "crown," "club," and "heel." The crown and heel refer to the top and bottom buns, respectively, while the club means the middle bread piece.

@essentialmcdonalds #mcdonalds #howto #bigmac ♬ Stuck in the Middle - Tai Verdes

Each piece of bread is toasted on each side before being transferred to a square takeout box.

"You put your buns in the box. Your crown's on the top, your heels on the bottom, and your club's on top of your crown," the TikToker said. They continued that employees add "one shot" of Big Mac sauce to the club and the heel, but they used three squirts per bun instead.

Then they added a handful of dehydrated onions and around a half-ounce of lettuce onto the club and heel pieces. Two pickles were placed onto the club, while a slice of cheese went on the heel. The two pieces of meat were added last.

The TikToker then said that the "most challenging" part of the process is transferring the now-assembled club portion on top of the heel.

A representative for McDonald's did not immediately respond to Insider's request for comment.

@essentialmcdonalds, who asked to remain anonymous due to privacy reasons, shared more details about how Big Macs are made with Insider. They said that staffers typically make 5 to 10 Big Macs during a shift, but that number skyrockets to 20 to 30 when the fast-food chain advertises a promotion.

In fact, they said one of their more memorable moments happened during the MacCoin promotion, which allowed customers to collect "MacCoins" and use them to get free Big Macs. They said the influx of people forced the restaurant to open a second line to accommodate.

They also explained that making a Big Mac can take a few attempts for new employees.

"New employees generally get it within 4-5 sandwiches, so once they've made 4-5 of them they typically understand how to make it," they told Insider.

As Insider's Rachel Askinasi previously reported, the @essentialmcdonalds account made headlines by showing viewers how McDonald's prepares their eggs for breakfast sandwiches.